Inorganic Chemistry Questions
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Inorganic Chemistry
Coordination compoundsAn unsaturated fatty acid is converted to a saturated fatty acid in the presence of hydrogen (H₂) and a catalyst. Identify the type of reaction.
Hydrolysis
Hydrogenation
Saponification
Esterification
I DON'T KNOW YET
Inorganic Chemistry
MetallurgyHow many lone pairs are on the central atom in BC13?
How many lone pairs are on the central atom of BrF3?
Inorganic Chemistry
HydrogenWhat type of interaction could occur between the side chains of a serine and a threonine residue?
Disulfide bond
Ionic bond or salt bridge
Hydrogen bond
Hydrophobic
I DON'T KNOW YET
Inorganic Chemistry
Classification of Elements and PeriodicityAll three of the boron-fluorine single bonds in BF3 are polar. In which direction should the polarity
arrows point?
to the right
to the left
toward the central boron atom
away from the central boron atom
Inorganic Chemistry
Qualitative analysisA triacylglycerol is reacted with water and a strong acid to yield glycerol and three fatty acid molecules. Identify the reaction type.
Saponification
Hydrolysis
Hydrogenation
Esterification
I DON'T KNOW YET
Inorganic Chemistry
MetallurgyPredict which fatty acid would have the lowest melting point.
CH₂(CH₂CH=CH),(CH₂),COOH (cis configuration)
CH₂(CH₂) COOH
CH (CH₂) CH-CH(CH₂) COOH (cis configuration)
CH (CH) CH-CHCH₂CH-CH(CH) COOH (cis configuration)
I DON'T KNOW YET
Inorganic Chemistry
Preparation and Properties of CompoundsWhat is the classification of the enzyme that catalyzes this reaction?
ATP + protein → ADP + phosphoprotein
Oxidoreductase
Ligase
Transferase
Isomerase
I DON'T KNOW YET
Inorganic Chemistry
Preparation and Properties of CompoundsCalculate the pH of a solution formed by mixing 65 mL of a solution that is 0.26 Min NaHCO3 with 75 mL of a solution that is 0.22 Min Na2CO3.
Inorganic Chemistry
P Block - Group 14According to Schaie, an individual in the responsible stage is capable of
using knowledge to pursue goals.
Solving practical problems associated with responsibilities to others.
reorganizing his/her life and intellectual energies around meaningful pursuits.
acquiring knowledge for its own sake.
Inorganic Chemistry
Coordination compoundsWhich of the following statements are true of acids and/or bases. Select all that apply.
Bases have a sour taste.
Acids have a sour taste.
Bases generate H+ ions in water.
Acids generate H+ ions in water.
Ammonia is a common acid
An Arrhenius base generates protons in water.
Inorganic Chemistry
MetallurgyThe empirical formula of a certain hydrocarbon is CH₂. When 0.125 moles of this hydrocarbon is completely burned with excess oxygen, it is observed that 8.40 Liters of CO₂ gas are produced at STP. What is the molecular formula of the unknown hydrocarbon?
a) CH₂
b) C₂H4
d) C3H₁
e) C4H8
c) C₂H₂
Inorganic Chemistry
Preparation and Properties of CompoundsCalculate [H] for each of the following solutions at 25°C, and state whether the solution is neutral, acidic, or basic.
a. 3.7x10-4 M OH™
b. 2.9x10-9 MOH™
HOW DO WE GET THERE?
What is [H] for a solution with 3.7×10-4 M OH at 25°C?
Inorganic Chemistry
MetallurgyA sample of methane gas at a pressure of 0.721 atm and a temperature of 27.4 °C, occupies a volume of 11.9 liters. If the gas is allowed to expand at constant temperature to a volume of 20.2 liters, the pressure of the gas sample will be ___ atm.
Inorganic Chemistry
MetallurgyGlucose is consumed in the presence of oxygen to afford carbon dioxide and water as shown in the balanced reaction: 602 + C6H1206-> 6CO2 + 6H20
If one mole of Glucose is allowed to react with 5 moles of oxygen, which statement is correct?
A oxygen is the limiting reactant
B. Glucose is the limiting reactant
C water is the limiting reactant
D. carbon dioxide is the limiting reactant
Inorganic Chemistry
Preparation and Properties of CompoundsA mixture of nitrogen and methane gases, in a 6.75 L flask at 12 °C, contains 5.48 grams of nitrogen and 2.74 grams of methane. The partial pressure of methane in the flask is ____ atm and the total pressure in the flask is _____atm.
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. SO2 is the limiting reagent
B. S is the limiting reagent
C. H₂S is the limiting reagent
D. H₂O is the limiting reagent
Inorganic Chemistry
Preparation and Properties of CompoundsSodium thiosulfate Na2S2O3, the major component in photographic fixer solution, reacts with silver bromide to dissolve it according to the following reaction
AgBr(s) + 2Na2S2O3(aq) NasAg(S2O3)2(aq) + NaBr(aq)
How many moles of Na2S2O3 would be required to react completely with 0.610 g of AgBr?
How many ml of 0 017 M Na2S₂O3 contain this number of moles?
Inorganic Chemistry
Preparation and Properties of CompoundsA sample of chlorine gas has a density of ____ g/L at a pressure of 0.793 atm and a temperature of 54 °C.
Inorganic Chemistry
MetallurgySO2 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. 3.4 grams of H₂S remains when reaction is complete
B. 0.36 grams of SO2 remains when reaction is complete
OC. 0.98 grams of H₂S remains when reaction is complete
D.5.3 grams of SO2 remains when reaction is complete
Inorganic Chemistry
Hydrogen0.967 mol sample of hydrogen gas at a temperature of 13.0 °C is found to occupy a volume of 25.3 liters. The pressure of this gas sample
Inorganic Chemistry
Qualitative analysisCalculate the lattice energy of ionic solid MX, given the following thermodynamic data:
M(s) + 1/2 X2(g) → MX(s) ΔHran-695. kJ
ΔHran= 91. kJ
M(s) → M(g)
Bond energy of X2 = 178. kJ/mol
lonization energy for M(s) = 426. kJ/mol
Electron affinity of X = -279. kJ/mol
Inorganic Chemistry
Classification of Elements and PeriodicityAluminum has a specific heat capacity of 0.90 J/gK and iron has a specific heat capacity of 0.45 J/gK. If you had equal mass samples of the two metals at the same temperature and they both absorbed the same amount of heat, which one would be at the higher temperature?
Iron
Aluminum
Inorganic Chemistry
MetallurgyA 13.37 g sample of an unknown hydrocarbon undergoes combustion in a bomb calorimeter with a calorimeter constant of 18.5 kJ/C. If the calorimeter increases in temperature from 17.89 to 29.49 °C, what is the value of q (in kJ) for the combustion reaction. Include the correct sign with your value.
Inorganic Chemistry
MetallurgyA system undergoes a process consisting of the following two steps: Step 1. The system absorbs 57 J of heat while 94 J of work is done on it Step 2. The system releases 57 J of heat while performing 59 J of work. Calculate ΔE for the overall process
Inorganic Chemistry
Preparation and Properties of CompoundsIn the laboratory you dissolve 20.0 g of ammonium fluoride in a volumetric flask and add water to a total volume of 250 mL.
What is the molarity of the solution?
What is the concentration of the ammonium cation?
What is the concentration of the fluoride anion?
Inorganic Chemistry
D Block elementsA student synthesized a new molecule of MX4 with either point group Td, C2v, or C4v each of
the following point group's character tables are reflected above.
A. None of these point groups result in the rule of mutual exclusion
B. List the possible Raman active modes for each point group
Td
C2v
CAV
C. List the possible IR active modes for each point group
Td
C2v
C4V
D. MX4 molecules will have ____ total vibrational modes
Inorganic Chemistry
Classification of Elements and PeriodicitySuppose that an alloy were made from gold and carbon. Identify the type of alloy that would be made and predict how the alloy's malleability would change relative to the original gold metal, and justify your prediction using your understanding of metallic solid structure.
Inorganic Chemistry
Coordination compoundsUsing complete subshell notation, match the each the predicted electron configuration of following atoms.
Si
Tb
Te
Fe
N
a. 1s²2s²2p63s²3p64s²3d¹04p65s²4d105p66s²4f⁹
b. 1s²2s²2p63s²3p²
c. 1s²2s²2p³
d. 1s²2s²2p63s²3p64s²3d¹04p65s²4d105p4
e. 1s²2s²2p63s²3p63d6
Inorganic Chemistry
Qualitative analysisA solution is made by dissolving 2.15 g glucose (C6H12O6) in enough water to make 102.1 mL of solution. Calculate the molarity of this solution.
HOW DO WE GET THERE?
What are the moles of C6H12O6 present?
Inorganic Chemistry
Preparation and Properties of CompoundsConsider the reaction:
2 NaBH4(aq) + H₂SO4(aq) → 2 H₂(g) + Na2SO4(aq) + B₂H6(g)
What volume, in mL, of a 0.535 M solution of NaBH4 is required to produce 0.514 g of B₂H6? H₂SO4 is present in excess.
Inorganic Chemistry
Classification of Elements and PeriodicityThe useful metal manganese can be extracted from the mineral rhodochrosite by a two-step process. In the first step, manganese(II) carbonate and oxygen react to form manganese(IV) oxide and carbon dioxide:
2MnCO3(s) + O₂(g). -> 2 MnO₂ (s) + 2 CO₂ (g)
In the second step, manganese(IV) oxide and aluminum react to form manganese and aluminum oxidide:
3 MnO₂ (s) + 4Al(s) 3 Mn(s) + 2 Al₂O3(s)
Suppose the yield of the first step is 90.% and the yield of the second step is 69.%. Calculate the mass of manganese(II) carbonate required to make 10.0 kg of manganese.
Inorganic Chemistry
Qualitative analysisCalculate the mass of solid KCl that must be added to 1.62 L of a 0.229 M Pb(NO3)2 solution to precipitate all the Pb2+ ions in the form of PbCl2. What mass of KCl is required?
Inorganic Chemistry
Classification of Elements and PeriodicityA chemist must dilute 73.1 mL of 2.66 M aqueous Iron(III) bromide (FeBr;) solution until the concentration falls to 2.00 M. She'll do this by adding distilled water to the solution until it reaches a certain final volume.
Inorganic Chemistry
Classification of Elements and PeriodicityA chemist adds 475.0 mL of a 0.969M sodium chloride (NaCl) solution to a reaction flask. Calculate the millimoles of sodium chloride the chemist has added to the flask.
Inorganic Chemistry
P Block - Group 14In which of the following are both members of the pair polysaccharides containing a-1,4 glycosidic bonds and a-1,6 glycosidic bonds to branches?
Glycogen and amylopectin
Cellulose and amylopectin
Amylose and cellulose
Glycogen and amylose
I DON'T KNOW YET
Inorganic Chemistry
Classification of Elements and Periodicity97.000 mL of 0.200 M Cu(NO3)2(aq) is mixed with 156.00 mL of 0.400 M NaOH(aq). Assuming 100% yield, what mass (in g) of precipitate will form?
Inorganic Chemistry
Preparation and Properties of CompoundsA student adds 6.50 g of dry ice (solid CO2) to an empty balloon. What will be the volume of the balloon at STP after all the dry ice sublimes (converts to gaseous CO₂)?
Inorganic Chemistry
Classification of Elements and PeriodicityWhich of the following correctly lists the types of radiation in the order of increasing energy?
a. X rays, microwaves, visible light, infrared
b. infrared, radio waves, gamma rays, visible light
c. microwaves, ultraviolet, X rays, gamma rays
d. infrared, ultraviolet, visible light, gamma rays
Inorganic Chemistry
Preparation and Properties of CompoundsA sample of oxygen gas is collected over water at 25°C and a total pressure of 652 torr. The volume of the gas collected is 500.0 mL. What mass of oxygen is collected? The vapor pressure of water at 25°C is 23.8 torr.
Inorganic Chemistry
Preparation and Properties of CompoundsA 3.94 gram sample of an unknown gas is found to occupy a volume of 2.48 L at a pressure of 610 mm Hg and a temperature of 56 °C. The molar mass of the unknown gas is __ g/mol.
Inorganic Chemistry
MetallurgyA sample of neon gas at a pressure of 920 mm Hg and a temperature of 55 °C, occupies a volume of 8.27 liters. If the gas is cooled at constant pressure to a temperature of 11 °C, the volume of the gas sample will be __ L.
Inorganic Chemistry
Classification of Elements and PeriodicityWhat is the concentration of chloride ions in a solution obtained by mixing 210. mL of 0.500 M potassium chloride (aq) with 260. mL of 0.440 M barium chloride(aq).
Inorganic Chemistry
MetallurgyWhat is the net ionic equation for the reaction between aqueous solutions of Cr(NO3)3 and Na3PO4?
Na+ (aq) + NO3(aq) → NaNO3(s)
Cr³+ (aq) + PO4³(aq) → CrPO4(s)
Cr³+ (aq) + PO4³(aq) → CrPO4(aq)
Cr(NO3)3(aq) + Na3PO4(aq) → CrPO4(s) + 3 NaNO3(aq)
Na (aq) + NO3(aq) → NaNO3(aq)
Inorganic Chemistry
MetallurgyA sample of krypton gas at a pressure of 0.868 atm and a temperature of 27.0 °C, occupies a volume of 786 mL. If the gas is compressed at constant temperature until its pressure is 1.33 atm, the volume of the gas sample will be ___ mL.
Inorganic Chemistry
Preparation and Properties of CompoundsWhat volume is occupied by a 1.66 mol sample of krypton gas at a temperature of 0 °C and a pressure of 1 atm?
Inorganic Chemistry
Preparation and Properties of CompoundsA sample of neon gas at a pressure of 0.875 atm and a temperature of 23.3 °C, occupies a volume of 15.0 liters. If the gas is allowed to expand at constant temperature to a volume of 19.2 liters, the pressure of the gas sample will be ___ atm.
Inorganic Chemistry
Preparation and Properties of CompoundsA sample of krypton gas collected at a pressure of 456 mm Hg and a temperature of 298 K has a mass of 114 grams. The volume of the sample is____L.
Inorganic Chemistry
Preparation and Properties of CompoundsThe average lung capacity of a human is 6.0 L. How many moles of air are in your lungs when you are in the following situations?
Assume air behaves ideally and has an average molar mass of 29.0 g/mol.
a. At sea level (T = 298 K, P = 1.00 atm).
b. 10 m below water (T = 298 K, P = 1.98 atm).
c. At the top of Mount Everest (T= 203 K, P = 0.297 atm).
Inorganic Chemistry
MetallurgyA 3.11 gram sample of neon gas has a volume of 900 milliliters at a pressure of 3.07 atm. The temperature of the Ne gas sample is ___ °C.