Inorganic Chemistry Questions
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Inorganic Chemistry
Qualitative analysis7 Describe the physical process by which soap solubilizes dirt Hint Use the solubility principles to complete a diagram e g micelle showing many soap molecules as bridges between water and oil Label and explain the diagram further
Inorganic Chemistry
MetallurgyA piece of metal was found on the side of the road The metal was put on a balance and found to have a mass of 79 10 g The volume was determined by placing the metal into a 27 00 ml column of oil which was displaced to 34 00 mL What was the volume of the unknown metal in mL What was the Density of this metal What was this metal O Volume 7 00 ml Density 11 3 g mL Metal lead Volume 4 00 ml Density 2 7 g ml Metal aluminum Volume 7 00 ml Density 19 1 g ml Metal uranium Volume 8 00 ml Density 7 14 g ml Metal zinc
Inorganic Chemistry
Preparation and Properties of CompoundsComplete the table below by writing the symbols for the cation and anion that make up each ionic compound T ionic cation anion compound NaCl NiBra CaF Mnl Na T cl 0 X
Inorganic Chemistry
Classification of Elements and PeriodicityOrbitals which result from solving the Schr dinger wave equation can be represented by ele ictures Match the orbitals below with their kind and identify their shapes Put letters in alphabetical order If none are correct leave the box blank A 1 s orbital 2 p orbital 3 d orbital B s orbitals have a p orbitals have a d orbitals have a C shape shape shape D
Inorganic Chemistry
Classification of Elements and Periodicityrmine the oxidation state of copper in monatomic Tap the arrows to set the value for the oxidation state copper
Inorganic Chemistry
Qualitative analysisConsider the molecule with the following skeletal structure Experiment 10 Molecular Models and Covalent Bonding c OA H N H 1 Indicate the hybridization employed by each central atom a C b N c OA 2 Indicate the electron pair geometry about each central atom a C b N b pi bond s C 0H d OB d OB 3 Indicate the predicated bond angles around each central atom having more than one bond a C b N c OB Lab Re 4 Describe all the sigma o and pi n bonds in this molecule in the form of a hybridization and bonding scheme For example a hypothetical O H bond O 2sp2 H 1s is a sigma bond a sigma bond s
Inorganic Chemistry
Preparation and Properties of CompoundsMatch the picture below with the substance and indicate the correct summary of this behavior This substance is C Diamagnetic It is D Paramagnetic E Ferromagnetic In a magnetic field it is This substance is A Liquid Oxygen O 1 B Liquid Nitrogen N 1 It is F Strongly attracted G Attracted H Slightly repelled A Liquid Oxygen O 1 B Liquid Nitrogen N 1 C Diamagnetic D Paramagnetic E Ferromagnetic F Strongly attracted
Inorganic Chemistry
Metallurgy25 grams of oxygen gas is heated in a container with a volume of 500 mL to 350 C What is the pressure in the container
Inorganic Chemistry
Preparation and Properties of Compoundsch the picture below with the substance and indicate the correct summary of this be This substance is C Diamagnetic It is D Paramagnetic E Ferromagnetic This substance is A Liquid Oxygen O 1 B Liquid Nitrogen N 1 In a magnetic field it is G Attracted It is In a magnetic field it is F Strongly attracted H Slightly repelled A Liquid Oxygen 0 1 B Liquid Nitrogen N 1 C Diamagnetic D Paramagnetic E Ferromagnetic F Strongly attracted G Attracted
Inorganic Chemistry
Qualitative analysisNitrogen and hydrogen gases are combined at high temperatures and pressures to produce ammonia NH3 If 104 7 g of N are reacted with excess H how many moles of NH3 will be formed Hint Write out and balance the equation O2 49 mol none of these options 5 60 mol 7 47 mol 3 74 mol
Inorganic Chemistry
S Block - Group 2of the following describes the element He e all that apply orms a basic solution in water s one of the group of the least reactive elements belongs to a group consisting entirely of gases consists of diatomic molecules in elemental form s very reactive as a metal reacts vigorously with alkali metals to form salts
Inorganic Chemistry
Classification of Elements and Periodicity2 Why was the amount of copper produced used to determine which reaction occurred i e why wasn t the iron sulfate compound measured instead The amount of copper produced was used to determine which realtion occurred because the amount it weighed in grams is the theoretical yield and whatever reaction is closer to the actual yield determines which reaction occured
Inorganic Chemistry
MetallurgyIf I have an unknown quantity of gas held at a temperature of 900 K in a container with a volume of 25 0 liters and a pressure of 36 0 atm how many moles of gas do I have
Inorganic Chemistry
Classification of Elements and Periodicity6 The bond between atoms in a molecule of hydrogen chloride is a lonic b Covalent c metallic d polyatomic
Inorganic Chemistry
Preparation and Properties of Compounds3 The statutory period of redemption lasts how long a one month b ten days c six months d one week
Inorganic Chemistry
HydrogenTry to balance the following chemical reaction HC1O4 aq NO2 g HCl aq HNO3 aq
Inorganic Chemistry
Preparation and Properties of Compounds5 What is another name for the Uniform Real Estate Contract O a builder s contract b residential contract c agent contract d land contract
Inorganic Chemistry
Coordination compoundsName these coordination compounds formula V Br NH3 4 Cl CrC1 CO 4 Br Na AuCI H O name
Inorganic Chemistry
Hydrogen2 Calculate AH for the following reactions using bond enthalpies a 2CO g O2 g 2CO2 g 1 0 3 100 1 Pal k b C2H2 g H2 g C2 H4 g Co Calze ION
Inorganic Chemistry
Coordination compoundsName these coordination compounds formula AuCl NH CI K FeCl H O K Co Br CO name
Inorganic Chemistry
Preparation and Properties of Compounds20 Which element is most likely to form an ionic bond with aluminum a lithium b nitrogen c lead d calcium
Inorganic Chemistry
Classification of Elements and Periodicity10 Suggest a frontier area in bioinorganic chemistry i e a newer area that will be should be investigated in the coming years
Inorganic Chemistry
Qualitative analysisCalculate ΔH for the following reactions using bond enthalpies
a. 2CO(g) + O2(g) →→2CO2(g)
b. C₂H2(g) + H2(g) → C₂H4(g)
c. 4NH3(g) + 5O2(g) →→ 4NO(g) + 6H₂O(g)
d. Br2(g) + CH4(g) → CH3Br(g) + HBr(g)
Inorganic Chemistry
Qualitative analysisA metal cylinder with a fixed volume was filled with gas to 4.00 atm pressure at room temperature, 30.0 C. The cylinder was then taken outside on a cold winter day where the temperature was -30.0 C. What is the pressure inside the cylinder?
Inorganic Chemistry
Coordination compoundsFor the following coordination complex: (Ni(NO₂)₂Br₂)^-2
Give the name
Determine the geometry
Give the coordination number of the central cation
State which type if geometric isomers are present (if none are present, write "none")
Inorganic Chemistry
Qualitative analysisWhat would you need to do to make a 13% solution of sodium chloride (NaCl)?
Add 26 g of sodium chloride to a beaker and add water to make a final volume of 200 mL.
Add 13 g of sodium
chloride to 100 mL of water.
Add 13 g of sodium chloride to a beaker and add water to make a final volume of 100 mL.
Add 26 g of sodium chloride to 200 mL of water.
Inorganic Chemistry
Classification of Elements and PeriodicityOrder the atoms in each of the following sets from the least exothermic electron affinity to the most.
(Enter multiple answers as acomma-separated list.)
a.
N,
O, F ________
b. Al,
Si, P_______
Inorganic Chemistry
Qualitative analysisBenzoic acid C6H5COOH has a heat of combustion of -3227kJ/mol. A 1.221g- sample burns in a calorimeter that has a heat capacity of 1365J/°C, and which contains 1.200kg of water. What temperature change is observed in the calorimeter?
Inorganic Chemistry
Qualitative analysisWhen burning ethanol in a closed system, which of the following is the best claim and reasoning? The ethanol reaction stops because a bromthymol blue solution that's present turns the same color as when ethanol vapor is blown into the solution Evaporated ethanol is produced because it burns. Water is produced because a bromthymol blue solution that's present turns the same color as when water vapor is blown into the solution. Carbon dioxide is produced because a bromthymol blue solution that's present tums the same color as when carbon dioxide is blown into the solution. " 1 2 3 4 5 6 8 9 10
Inorganic Chemistry
Preparation and Properties of CompoundsA. Boiling Point and Freezing Point
• The presence of solute "particles" causes the
to become__
• Why does the boiling point of a solution increase?
- Forming a_____in a solution in a solution
- Solute particles_____molecules trying to enter the bubble
Inorganic Chemistry
Qualitative analysisa) [NiH4]²-
b) N3
c) Mo(CO) 6
d) PC|3l2
e) SiO44-
For each of the molecules selected:
Draw the correct molecular geometry, including resonance structures if appropriate.
Provide the point group and the main symmetry elements (besides E).
Determine the polarity of the molecule and the direction of the dipole.
Inorganic Chemistry
Preparation and Properties of CompoundsSO2 reacts with H₂S as follows: 2H2S + SO2 --> 3S + 2H2O
When 7.50 g of H2S reacts with 12.75 g of SO2, which statement is true?
A. 0.266 moles of SO2 is consumed
B. 0.111 moles of SO2 is consumed
C. 0.221 moles of SO2 is consumed
D.0.442 moles of SO2 is consumed
Inorganic Chemistry
Coordination compoundsIn the series of Werner complexes (after the German-Swiss chemist) [CoX(NH3)5]n* with X = I™, CI', NH3, there is a color variation from purple (1), through pink (CI) to yellow (NH3). Explain this observation.
Inorganic Chemistry
Classification of Elements and PeriodicityA chemist adds 210.0 mL of a 2.68 x 10 M zinc oxalate (ZnC₂04) solution to a reaction flask. Calculate the micromoles of zinc oxalate the chemist has added to the flask. Round your answer to 3 significant digits.
Inorganic Chemistry
Classification of Elements and PeriodicityA solution is made by dissolving 28.5 g of ammonium nitrite, NH4NO₂, in enough water to make exactly 250, m of solution. Calculate the molarity of each species:
NH4NO₂
NH₂
NO₂
Inorganic Chemistry
Classification of Elements and PeriodicityWrite the net ionic equation for the following molecular equation.
3CuSO4(aq) + 2(NH4)3PO4(aq) —Cu3(PO4)2(s) + 3(NH4)₂SO4(aq)
Inorganic Chemistry
MetallurgyConcentrated sulfuric acid (18.3 M) has a density of1.84 g/mL.
(a) How many moles of H₂SO4 are in each milliliter of solution?
(b) What is the mass % of H₂SO4 in the solution?
Inorganic Chemistry
Preparation and Properties of CompoundsIn one of his most critical studies on the nature of combustion, Lavoisier heated mercury(II) oxide and isolated elemental mercury and oxygen gas. If40.0 g of mercury(II) oxide is heated in a 502-mL vessel and 20.0% (by mass) decomposes, what is the pressure (in atm) of the oxygen that forms at 25.0°C? (Assume that the gas occupies the entire volume.)
Inorganic Chemistry
Preparation and Properties of CompoundsLead (II) nitrate reacts with excess sodium chloride. Predict the products, balance the equation and determine the number of moles of sodium chloride that are consumed during the reaction if 47.4 grams of precipitate are formed.
Inorganic Chemistry
Preparation and Properties of CompoundsCircle the correct reaction that is coupled with the reaction below
(Hint: it helps to draw them)
dihydroxyacetone phosphate → glycerol-phosphate
1) FAD → FADH2
2) FADH2 → FAD
3) No oxidation/reduction occurs
Inorganic Chemistry
Qualitative analysisAn unknown weight of the aluminum sample (Al) was placed in the hydrobromic acid solution. The reaction was as follows:
2 Al (s) + 6 HBr (aq) -> 2 AlBr3 (s) + 3 H2(g)
What was the mass of the Al sample (in grams) if a 14.4 L of the gas product of this reaction was collected at the temperature of 520.0°C and
under the pressure of 741 mmHg?
Molar masses (in g/mole): Al = 26.98; HCI=80.91; AICI3 = 266.69;H₂=2.00
Guiding questions:
The temperature in K was
The pressure in atm was
The number of moles of gas was
The mass of the Al sample was
Inorganic Chemistry
Qualitative analysisA "dimer" forms when two of the same molecules combine (dimerize).
Draw a Lewis structure for each of the substances below and indicate which are free radicals. For a free radical the unpaired electron goes on the least electronegative element, which is usually the central atom.
C103
C103
CIO2
NO₂
Inorganic Chemistry
Qualitative analysisHow many grams of phosphorus (P4) are needed to completely consume 38.8 L of chlorine gas according to the following reaction at 25 °C and 1 atm?
phosphorus (P4) (s) + chlorine (g) phosphorus trichloride (l)
Inorganic Chemistry
Classification of Elements and Periodicity4. Use the balanced equation given to solve the following problems.
2 KMnO4 + 16 HCl -> 5 Cl2 + 2 KCl + 2 MnCl2 + 8 H₂O
b. How many moles of HCl are required to react with 35 grams of KMnO4?
Inorganic Chemistry
Preparation and Properties of CompoundsCalculate the wavelength (in nm) of the blue light emitted by a mercury lamp with a frequency
of 6.32 × 10^14 Hz (Hint: the speed of light = 3.00 x 10^8 m/s)
475 nm
190 nm
211 nm
385 nm
Inorganic Chemistry
Qualitative analysisWhy does Neiterkob's daughter most likely tell the myth "The Beginnings of the Maasai"?
to entertain the reader with the fantastic setting of where the Maasai live
to persuade the reader to adopt the Maasai's affection for the sky god
to explain to the reader the origin of Maasai culture
to impress the reader with the history of the Maasai
Inorganic Chemistry
Classification of Elements and PeriodicityGive all possible values of l for a n=4 sublevel.
1, 2, 3, 4
0, 1, 2, 3
3
4
-2, -1, 0, 1, 2
Inorganic Chemistry
Preparation and Properties of CompoundsDraw particle diagrams of the following:
BeCl₂ (s)
BeCl₂ (aq)
Rb3AsO4(s)
Rb3AsO4 (aq)
Inorganic Chemistry
Qualitative analysisIn which period of the periodic table do the elements have a "core-electron
configuration" that is the same as argon.
Fourth
Third
First
Second
Inorganic Chemistry
P Block - Group 14Which of the following gives the correct electronic configuration for the outermost
energy level and subshell for the element tin?
4d6
5s²
40
4d8
5p²