Coordination compounds Questions and Answers

5 Experimental Procedure Part A The substances NaCl Na CO MgSO4 and are all soluble ionic compounds For each substance indicate the ions present in its respective test solution NaCI Na C CI amo ojo noll 29 Na co Na Co MgSo NH CH NHy Mg 50 4 M 2 CL 6 Three colorless solutions in test tubes with no labels are in a test tube rack on the laboratory bench Lying beside the test tubes are three labels potassium iodide KI silver nitrate AgNO3 and sodium sulfide Na S You are to place the labels on the test tubes using only the three solutions present Here are your tests A portion of test tube 1 added to a portion of test tube 3 produces a yellow silver iodide precipitate A portion of test tube 1 added to a portion of test tube 2 produces a black silver sulfide precipitate a Your conclusions are Test tube 1 obl Test tube 2 Test tube 3 b Write the balanced equation for the formation of silver iodide Agl from a mix of two selected solutions provided above Write the balanced equation for the formation of silver sulfide Ag S from a mix of two selected solutions provided

Which atom would bond with chlorine to create a bond with the greatest ion character Magnesium Mg Lithium Li Calcium Ca Potassium K

3 Name the following salts of the transition and post transition elements using the Stock system a Fe OH 3 b FePO4 6H O c FeSO4 7H O d CuCN e CuCO3 f CuSO4 5H O g Sn NO3 2 h Sn SO4 2 i MnSO4 m CrPO4 j Mn CH3CO 2 n CrSO 6H O k Hg NO3 2 0 Co CO3 3 1 Hg NO3 2 H O p CoSO4 7H O

Suppose a patient comes to your clinic suffering from severe dehydration Microscopic examination shows that some of their rbc s look a bit odd and shriveled You choose to give them IV fluids to rehydrate them as fast as possible Will you choose an IV solution that is slightly hypertonic slightly hypotonic or isotonic to their red blood cells WHY

When 2 34 g of pure iron Fe is allowed to react with an excess of oxygen O 3 68 g of the final compound is produced Determine the formula of the compound A Fe O B FeO C FeO D FeO3 E FeO

Draw the Lewis structure for CCl4 Draw the molecule by placing atoms on the grid and connecting them with bonds Include all lone pairs of electrons DOC

Calculate the hydroxide ion concentration of a solution if its pH is 6 389 Select one O a 9 92 x 10 7 M O b 2 45 x 10 8 M O c 4 08 x 10 7 M O d 1 00 x 10 14 M

Identify the true statement s about the molecular orbital theory The molecular orbital theory describes molecules with delocalized bonding The molecular orbital theory describes the bonding in molecules in terms of a single electron configuration The molecular orbital theory requires two or more resonance formulas to describe the bonding in molecules

What is the environmental impact of using radioactive tracers in medicine to help diagnose disease The radioactive isotope must be stored in special containers and allowed to decay before being disposed The value of this tool to society is not high enough to warrant the cost of production storage and disposal The tracer contains harmful radioactive isotopes that must be disposed of safely to prevent soil and water contamination The radioactive isotope poses little threat to wildlife but is harmful if it gets into human drinking water and crop soil

Which of the following statements regarding the combustion of propane is false The products contain less energy than the energy stored in the bonds of the reactants The exothermic character of the reaction is explained by the breaking of high energy C C and C H bonds The reaction has a positive change in enthalpy The reaction has a positive change in entropy

When creating gold plating for iron metal calculate the mass of Au s produced when a current of 4 0 A runs through a solution of Aut for 45 minutes aq 1 1 10 1 g Au 2 2 10 g Au 4 4 10 g Au 5 9 g Au

Which of the following statements best describes Le Ch telier s principle A system will respond to an increase in the concentration of reactants by favouring the formation of the products Systems that are at equilibrium will counteract changes to the conditions to re establish a new equilibrium state A system where the rates of the forward and reverse reaction are identical favouring neither the products nor the reactants Systems at equilibrium respond in a predictable way to changes in temperature pressure volume or concentration

A 95 00 mL sample of 0 750 M HNO3 is titrated with 15 00 mL of 0 625 M LIOH What is the concentration of H remaining in the flask following the reaction 0 0619 M 0 07125 M 0 00937 M

Consider the following reaction 2 NOCI g 2 NO g Cl2 g What is the Keq for this reaction under STP if given the following Initial NOCI g 2 5 M Equilibrium Cl2 g 0 40 M 1 8 10 1 1x10 8 8 10 2 1 0 10

Which statement is true for the following diagram Free energy G A B E F C D Reaction coordinate OE F are the kinetic products The path to C D has a smaller AG OE Fare the thermodynamic products The path to E F has a lower activation energy The path to C D has a lower activation energy

Determine which of the graphs represents the relationship of reaction rate velocity and substrate concentration when the enzyme concentration of the non allosteric enzyme is constant Reaction velocity Substrate concentration Determine how reaction rate velocity varies with substrate concentration Rate increases Additional trade is addol when nic concentration Rate decreases Amwer Bank Amwer Bask Rate is unchanged Substrate is added when cryme is saturated with substrate

Use Charles s Law to interpret the following problem and then select the correct answer below A 250mL compressed tank is filled with Hydrogen gas and has a pressure of 100kPa If all of the Hydrogen gas is removed from the tank and pumped into a 1L tank what happens to the temperature of the gas options The temperature in the 250 mL tank decreases The temperature in the 250 mL tank increases The temperature in the 1 L tank increases All of the above None of the above Question 9 What does a pH of 3 00 mean about a solution options The solution is a strong acid The solution is a strong base The solution is mostly acidic The solution is mostly basic Impossible to answer with the given information Question 12 What is the concentration of a solution that is 0 25 moles of HCL added to 3 00L of water options 12 00 M HCL 12 00 moles HCL 0 75 M HCL 0 75 moles HCL Impossible to determine with the information provided 0 08 M HCL 0 08 moles HCL Question 14 What answer below best describes nuclear fission options A nuclear reaction where two small atoms merge together to form a new atom and absorb a significant amount A nuclear reaction where two small atoms merge together to form a new atom and release a significant amount heat

ret the following problem answer below A 250mL compressed tank is filled with Hydrogen gas and has a pressure of 100kPa If all of the Hydrogen gas is removed from the tank and pumped into a IL tank what happens to the temperature of the gas options The temperature in the 250 mL tank decreases The temperature in the 250 mL tank increases The temperature in the 1 L tank increases All of the above None of the above Question 15 The reaction rate of a reaction can be sped up by which of the following More than one answer is required wrong answers will get a penalty options Increase the pressure inside the container where the reaction is happening Decrease the temperature of the reaction Increase the temperature of the reaction Use a catalyst to reduce the needed activation energy Increase the concentration of reactants Decrease the concentration of reactants Decrease the pressure of the container where the reaction is happening Question 18 A chemical reaction can be reversed if options The energy of the reactants exceeds the activation energy threshold The energy of the products exceeds the activation energy threshold The energy of the reactants is less than the activation energy threshold The energy of the products is loss than the activation onorgy threshold

Which of the following statements describe why CH4 methane has a slightly larger bond angle than NH3 ammonia The additional bond in methane repels the other bonds more than the lone pair of electrons in ammonia The repulsion between electrons in the C H covalent bond of methane is maximized by the trigonal pyramidal shape The two lone pairs of electrons in ammonia push the N H covalent bonds closer together The presence of a lone pair of electrons in ammonia repels the electrons in the N H covalent bonds more than the C H bonds in methane

Which of the following is an example of sp d hybridizec central atom A BrFs B PF3 C CIO4 D XeF4 E I

Given the two reduction half reactions for the following galvanic cell determine the standard cell potential E cell 2 Br2 1 Zn s Znaq 2 Br aq Reduction half reactions Br2 1 2 e 2 Br aq 2 Zn aq 2 e Zn s 0 33 V O 1 85 V 0 33 V 1 85 V E 1 09 V E 0 76 V 1 4

Assume the diameter of the field of vision in your microscope is 2 mm under low power If one Bacillus cell measures 2 um long how many Bacillus cells could fit end to end across the field How many 10 um yeast cells could fit across the field

Use the ideal gas law to calculate the pressure inside of a IL compressed gas tank with a temperature of 273 15K filled with 13moles of CO R 8 31 options 567 74 kPa 21 01 kPa 3550 95 kPa 0 05 kPa None of the above Question 4 Does the water temperature change when a pot of water is hoiling options No all of the heat that is added to the water while the water is boiling is converting the liquid water to ga Yes temperature gets higher because you are adding more heat Yes the temperature gets lower because you are removing heat from the system Cannot answer this question with the information given Question 5 L kPa K mol Below is the thermochemical equation for the combustion of octane 2C8H18 1 2502 g 16CO2 g 18H O I AH 10 941 kJ How much heat is released during the combustion of 4 moles of octane C8H18 options 10 941 kJ 2 735 kJ 5 470 5 kJ 21 882 kJ

Diagrammatically represent the detailed reactions for the biosynthesis of the fatty acid linoleate 18 3w3 in the human liver starting from acetyl CoA T R 11 1 JE GO

10 A home security system has a pad with 9 digits 1 to 9 Find the number of possible 5 digit pass codes a If digits can be repeated b If digits cannot be repeated

3 Antimicrobial drugs have revolutionized medicine making many once deadly diseases no more than a minor inconvenience However there are sometimes problems that result from their use Please describe at least two serious problems associated with the use of these medicines

Draw methionine amino acid R the side chain is CH CH SCH3 in both its a zwitterionic form b at a pH 1 c True or False This amino acid can be oxidized to a disulfide compound

a Describe the soap making process and how soap works Include a description and drawing of a micelle b Describe the function of a lipid bilayer and compare and contrast the micelle to a lipid bilayer in terms of their chemical structures

This two part question has to do with the topic of stereochemistry a Is glycine chiral or achiral Briefly explain b What is the maximum number of stereoisomers that can exist for threonine Briefly explain with Fischer Projections indicating any enantiomeric or diastereomeric relationships between your drawings

Acidic Solutions THE PURINA TEM IRDINEAN 2 MnO I I Mn

Four identical Erlenmeyer flasks contain different gases at the same temperature and pressure which of the following will have the greatest density a hydrogen b helium C oxygen d carbon dioxide e all the same

G i want from you to wrtie a letter for my teacher she will leave the school le tbe short and simple her name is mrs kirby i want from you to wrtie a letter for my teacher she will leave the school le tbe short and simple her name is mrs kirby Google Search

at paber bae vibals NO H 0 H CH3 CHINH CH3 C OH edastat Foottocer aid daw goots caxs

What type of inhibitor is noradrenaline in the shown feedback loop below HO Tyrosine NH hydroxylase HO O H L Tyrosine Dopamine B hydroxylase HO HO HO OH Noradrenaline Levodopa NH H Dopa NH decarboxylase HO CO H N Methyl transferase Adrenal medulla HO HO Dopamine OH HO Jox Adrenaline NHMe NH

3 Write 3 sentences sneaking into a house that use onomatopoeia SENTENCE 1 Type here SENTENCE 2 Type here SENTENCE 3 Tyne here

Reaction Rates Retake lest How does decreasing surface area of the reactants affect the rate of a reaction O increases reaction rate O does not affect reaction rate O not enough information provided to answer decreases reaction rate

The zirconium complex Zr2C16 PMe3 4 is diamagnetic Draw suitable orbital overlap and energy level diagrams to account for this property and indicate the presence or absence of any metal metal bonding

Complete the following table of some common polyatomic ions using the Formulas and Charges handout Ion Formula NHA CN HCO3 SO Ion Name Acetate Carbonate Ion Formula PO OH I HSO4 Ion Name Monohydrogen phosphate Nitrate Chlorate Polyatomic ions themselves are covalently bonded however when joined with another charged species the interaction is ionic Note that ammonium NH4 is a polyatomic cation and all others in the table are anions NH4 takes the place of metals in ionic compounds For instance ammonium chloride is NH4Cl and ammonium sulfate is NH4 2SO4 These are ionic compounds even though neither contains a metal Notice the parentheses around NH4 in ammonium sulfate The parentheses must be placed around polyatomic ions to indicate that the subscript pertains to the entire polyatomic unit That is there are two NHA polyatomic

13 Explain why walking on a treadmill is a good example of dynamic equilibrium

1 How many spots should be seen for each of the aspartic acid and phenylalanine columns on the chromatogram Why

Problem 1 Circle and name the following parts of 1 Fill the complementary DNA strand using DNA complementary base pairing rules 2 Fill the correct mRNA bases by transcribing bottom of DNA code 3 Translate mRNA codons and find the correct amino acid using the Codon Table 4 Write the amino acid and the correct anticodon the tRNA molecule 0 00 00 100 Y DNA mRNA tRNA Amino Acids

5 What would you expect a 6 month old can of aspartame sweetened soda pop to taste like

9 What is the bond order of Cl A 0 B 0 5 C 1 D 1 5 52

7 What 4 factors can affect the enzyme activity Draw the 4 respective graphs with enzyme catalytic activity rates on the Y axis and each of the 4 factors on the X axis b d

Sigma Bonding sp hybrid orbital A a bond arises from the straight on overlap of two atomic orbitals The electron den llies along the axis of the two bonded nuclei 1s orbital Example Sigma Bonding in methane CH4 hat atomic or hybrid orbital on the central Sb atom makes up the sigma bond between this Sb and an oute com in antimony III fluoride SbF3 orbital on Sb What is the approximate F Sb F bond angle

Exercise D Naming acids and bases Fill in the blank spaces with the formula or name of an acid or base 1 2 3 4 5 6 7 Formula HCN H SO4 H3PO4 KOH Name sodium hydroxide carbonic acid hydrochloric acid encialuolsa 10 aluminum hydroxide H

iive a two word name substrate reaction type for an en yme that catalyzes each of the following reactions Reduction of oxalate Decarboxylation of citrate Removes an amine group from adenosine Forms an ether linkage between two alcohol molecules

Which of these are ignored for the kinetic molecular theory of matter The mass of the particles The average kinetic energy of the particles The size of the particles The interactions between particles

To establish a standard curve for a BSA standard curve using Bluret the spectrophotometer wavelength is set on which value O the wavelength at which Biuret s absorption value is the highest O the wavelength at which the BSA s absorption value is the lowest OBSA standard curve should not be drawn up using Biuret the wavelength at which the copper it complex s absorption value is the highest O the wavelength at which Biuret s absorption value is the lowest O the wavelength at which the BSA s absorption value is the highest the wavelength at which the copper i complex s absorption value is the lowest

tions a CoCl 6H O H O NH4OH NH4CI unknown compound H O b Write chemical equations for the following re c unknown compound Ag unknown compound heat CoCl