Inorganic Chemistry Questions
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Inorganic Chemistry
D Block elementsWrite the net ionic equation for the precipitation of zinc carbonate from aqueous solution:
Inorganic Chemistry
P Block - Group 13The following statement refers to a good sales strategy in relation to which function of Jung's human awareness: Present your material in an orderly and logical manner.
a. Thinking
b. Feeling
c. Sensing
d. Intuiting
Inorganic Chemistry
Preparation and Properties of CompoundsWhen aqueous solutions of ammonium carbonate and silver(I) nitrate are combined, solid silver(I) carbonate and a solution of ammonium nitrate are formed. The net ionic equation for this reaction is:
Inorganic Chemistry
Classification of Elements and PeriodicityCalculate (Show all work for credit. Answer should be in significant figures)
a. How many meters in 1.00 mile?
b. How many centimeters are in 2.00 ft?
Inorganic Chemistry
Preparation and Properties of CompoundsA unknown atom has atomic number of 7 and mass number 15. It has
s. 7 protons and 7 neutrons.
b. 7 protons and 8 neutrons.
c. 7 protons and 15 neutrons.
d. 15 protons and 7 neutrons.
e. 8 protons and 7 neutrons
Inorganic Chemistry
Qualitative analysisPotassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory to standardize strong base solutions. It has the unwieldy formula of KHC8H4O4. This is often written in shorthand notation as KHP.
If 2.59 grams of KHP are needed to exactly neutralize 23.0 mL of a potassium hydroxide solution, what is the concentration of the base solution?
Inorganic Chemistry
Preparation and Properties of CompoundsThe following skeletal oxidation-reduction reaction occurs under basic conditions. Write the balanced OXIDATION half reaction.
Br + ClO3 → Br₂ + Cr
Inorganic Chemistry
Qualitative analysisConsider the balanced equation:
2CH4 + 40₂ → 2CO₂ + 4H₂O
If 2.50 mol of each reactant is mixed together, how many moles of CO2 will be produced?
a. 2.50
b. 5.00
c. 1.25
d. 4.00
e. 2.00
Inorganic Chemistry
Qualitative analysisAn aqueous solution of sodium hydroxide is standardized by titration with a 0.128 M solution of hydrochloric acid.
If 28.9 ml of base are required to neutralize 23.1 mL of the acid, what is the molarity of the sodium ydroxide solution
Inorganic Chemistry
Classification of Elements and PeriodicityWhich BEST explains how syllogisms should be used to prove logic?
Select one:
arrange statements that avoid using emotional logic
arrange arguments that avoid using ethos or pathos
arrange premises so only one true conclusion is possible
arrange fallacies so only one true conclusion is possible
Inorganic Chemistry
Qualitative analysisThe compound potassium hydroxide is a strong electrolyte. Write the reaction when solid potassium hydroxide is put into water:
Inorganic Chemistry
Preparation and Properties of Compounds1. How many GRAMS of cobalt(II) cyanide are present in 3.07 moles of this compound ?
2. How many MOLES of cobalt(II) cyanide are present in 2.96 grams of this compound ?
Inorganic Chemistry
Qualitative analysisAn aqueous solution of potassium hydroxide is standardized by titration with a 0.137 M solution of nitric acid.
If 11.9 mL of base are required to neutralize 26.1 mL of the acid, what is the molarity of the potassium hydroxide solution?
Inorganic Chemistry
MetallurgyThe compound aluminum iodide is a strong electrolyte. Write the reaction when solid aluminum iodide is put into water:
Inorganic Chemistry
Preparation and Properties of CompoundsAccording to the following reaction, how many grams of phosphoric acid are necessary to form 0.170 moles potassium phosphate?
potassium hydroxide (aq) + phosphoric acid (aq) →potassium phosphate (aq) + water (l)
Inorganic Chemistry
HydrogenFor the following reaction, 0.750 grams of hydrogen gas are allowed to react with 14.3 grams of ethylene (C₂H4).
hydrogen (g) + ethylene (C₂H4) (g) -> ethane (C₂H6) (g)
What is the maximum amount of ethane (C₂H6) that can be formed?
What is the FORMULA for the limiting reagent?
What amount of the excess reagent remains after the reaction is complete?
Inorganic Chemistry
P Block - Group 15A compound is found to contain 19.73 % nitrogen and 80.27 % fluorine by mass.
To answer the question, enter the elements in the order presented above.
QUESTION 1:
The empirical formula for this compound is
QUESTION 2:
The molar mass for this compound is 71.01 g/mol.
The molecular formula for this compound is
Inorganic Chemistry
Qualitative analysis1. How many ATOMS of phosphorus are present in 4.75 moles of phosphorus trichloride ?
2. How many MOLES of chlorine are present in 6.13×1022 molecules of phosphorus trichloride ?
Inorganic Chemistry
Preparation and Properties of CompoundsChoose the correct net ionic equation for the reaction between nickel(II) chloride and sodium oxalate.
Ni2+ (aq) + C₂04²(aq) → NiC₂O4(s)
NiCl₂(aq) + Na₂C₂O4(aq) → NiC₂O4(s) + 2 NaCl(aq)
Ni2+ (aq) + 2 Cl(aq) + 2 Na*(aq) + C₂04² (aq) → Ni²+ (aq) + C₂042 (aq) + 2Na*(aq) + 2CH(aq)
Ni2+ (aq) + 2 CH(aq) + 2 Na*(aq) + C₂04²(aq) → NIC2O4(s) + 2Na*(aq) + 2CH(aq)
Inorganic Chemistry
Qualitative analysis1. How many MOLECULES of boron trifluoride are present in 2.07 grams of this compound?
2. How many GRAMS of boron trifluoride are present in 1.08×1023 molecules of this compound?
Inorganic Chemistry
Coordination compoundsFour 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
Inorganic Chemistry
S Block - Group 2For the following reaction, 23.0 grams of sodium chloride are allowed to react with 71.5 grams of silver nitrate.
sodium chloride (aq) + silver nitrate (aq) →silver chloride (s) + sodium nitrate (aq)
What is the maximum amount of silver chloride that can be formed?
What is the FORMULA for the limiting reagent?
What amount of the excess reagent remains after the reaction is complete?
Inorganic Chemistry
Preparation and Properties of CompoundsThe compound lead(II) cyanide is a strong electrolyte. Write the reaction when solid lead(II) cyanide is put into water:
Inorganic Chemistry
Preparation and Properties of CompoundsThe compound copper(II) nitrate is a strong electrolyte. Write the reaction when solid copper(II) nitrate is put into water:
Inorganic Chemistry
Classification of Elements and PeriodicitySelect the net ionic equation for the following reaction:
NaCl(aq) + AgNO3(aq) -> NaNO3(aq) + AgCl(s)
Ag (aq) + Cl(aq) -> AgCl(s)
Ag(s) + Cl(g) -> AgCl(s)
Ag (aq) + NO3(aq) + Nat(aq) + Cl(aq) -> AgCl(s) + Na*(aq) + NO3(aq)
AgNO3(aq) + CH(aq) -> AgCl(s) + NO3(aq)
NaCl(aq) + Ag*(aq) -> AgCl(s)
Inorganic Chemistry
Preparation and Properties of CompoundsThe following reactions
2K(s) + Br₂(1)→ 2KBr(s)
AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)
HCl(aq) + KOH(aq) → H₂O(l) + KCl(aq)
are examples of
precipitation (two) and acid-base reactions, respectively.
redox, precipitation, and acid-base, respectively.
Oprecipitation reactions.
Oredox reactions.
None of these choices are correct.
Inorganic Chemistry
Preparation and Properties of CompoundsFor the following reaction, 25.2 grams of hydrochloric acid are allowed to react with 51.8 grams of barium hydroxide.
hydrochloric acid(aq) + barium hydroxide(aq)
barium chloride(aq) + water(l)
A.What is the maximum amount of barium chloride that can be formed?
B.What is the FORMULA for the limiting reagent?
C.What amount of the excess reagent remains after the reaction is complete?
Inorganic Chemistry
Classification of Elements and PeriodicityThe aspirin substitute, acetaminophen (C8H₂O₂N), is produced by the following three-step synthesis:
i. C6H5O3N(s) + 3H₂(g) + HCl(aq) → CeHs ONCI(s) + 2H₂O(l)
ii. C, H, ONCI(s) + NaOH(aq) → C6H7 ON (s) + H₂O(l) + NaCl(aq)
iii. C&H7 ON (s) + C₂H6O3(1)→ Cg H₂O₂N(s) + HC₂H30₂ (l)
The first two reactions have percent yields of 86% and 94% by mass, respectively. The overall reaction yields 13 moles of acetaminophen product for every 17 moles of C6H5O3N reacted.
a. What is the percent yield by mass for the overall process?
b. What is the percent yield by mass of Step III?
Inorganic Chemistry
Classification of Elements and PeriodicityWhich of the following compounds is a non-electrolyte?
A.acetic acid, CH3CO₂H
B.iron(II) chloride FeCl2
C.potassium iodide, Kl
D.sodium bicarbonate, NaHCO3
E.iodine
Inorganic Chemistry
Qualitative analysisWhat is an evenly distributed, uniform mixture called?
A. A homogeneous mixture
B. An ionic solid
C. A heterogeneous mixture
D. A compound
Inorganic Chemistry
P Block - Group 15For the molecular compound phosphorus triiodide, what would you multiply "grams of PI3" by to get the units "moles of PI3" ?
grams PI3 ?
Inorganic Chemistry
Preparation and Properties of CompoundsYou are given 0.902 g of an unknown diprotic acid, H₂A. It reacts with NaOH according to this balanced equation.
H₂A(aq) + 2 NaOH(aq) → Na₂A(aq) + 2 H₂O(1)
If a volume of 18.0 mL of 0.659 M NaOH is required to react with all of the acid, what is the molar mass of the acid
A)38.3 g/mol
B)152 g/mol
C)304 g/mol
D)76.3 g/mol
E)15.2 g/mol
Inorganic Chemistry
P Block - Group 15A compound is found to contain 14.88 %
phosphorus and 85.13 % chlorine by mass.
.
QUESTION 1:
The empirical formula for this compound is_____?
QUESTION 2:
The molar mass for this compound is 208.2 g/mol.
The molecular formula for this compound is_____?
Inorganic Chemistry
Classification of Elements and PeriodicityThe term brinkmanship refers to:
a. willingness to interfere with the national bank.
b. willingness to go to the edge, or brink, of war.
c. willingness to make peace with another country.
d. None of the above.
Inorganic Chemistry
Qualitative analysisFor the following reaction, 6.02 grams of oxygen gas are mixed with excess carbon (graphite). The reaction yields 5.52 grams of carbon dioxide.
carbon (graphite) (s) + oxygen (g) carbon dioxide (g)
What is the theoretical yield of carbon dioxide ?
What is the percent yield for this reaction ?
Inorganic Chemistry
Classification of Elements and PeriodicityBromine exists naturally as a mixture of bromine-79 and bromine-81 isotopes. An atom of bromine-79
contains:
34 protons and 35 electrons, only.
79 protons, 79 electrons, and 35 neutrons.
35 protons, 79 neutrons, and 35 electrons.
44 protons, 44 electrons, and 35 neutrons.
35 protons, 44 neutrons, 35 electrons.
Inorganic Chemistry
Qualitative analysisA compound is found to contain 39.12 % carbon, 8.772 % hydrogen, and 52.11 % oxygen by mass.
QUESTION 1:
The empirical formula for this compound is_____?
QUESTION 2:
The molar mass for this compound is 92.11 g/mol.
The molecular formula for this compound is______?
.
Inorganic Chemistry
Preparation and Properties of CompoundsConsider this reaction, which occurs in the atmosphere and contributes to photochemical smog:
4Fe(s) + 302(g) →2Fe₂O3(s)
If there is 14.56 g Fe and excess O₂ present, the reaction yields 18.0 g Fe2O3. Calculate the percent yield for the reaction.
Inorganic Chemistry
Qualitative analysisFor the following reaction, 6.53 grams of iron(II) chloride are mixed with excess silver nitrate. The reaction yields 8.37 grams of iron (II) nitrate.
iron(II) chloride (aq) + silver nitrate (aq) → iron(II) nitrate (aq) + silver chloride (s)
What is the theoretical yield of iron(II) nitrate?
What is the percent yield of iron(II) nitrate?
Inorganic Chemistry
S Block - Group 1The term urbanization refers to:
a. farming becoming obsolete.
b. the forced movement of farmers from rural areas to cities.
c. the expansion of cities.
d. a loosening of traditional values in rural communites.
Inorganic Chemistry
Qualitative analysisThe decomposition of 3.82 g NaHCO3 yields 1.78 g Na₂CO3. What is the percent yield of this reaction?
2 NaHCO3(s) → Na₂CO3(s) + CO₂(g) + H₂O(g)
73.9 %
63.1 %
23.3 %
46.6 %
100 %
Inorganic Chemistry
S Block - Group 2.A sample of Be weighs 37.0 grams. Will a sample of Al that contains the same number of atoms weigh more or less than 37.0 grams? (more, less):_________
Calculate the mass of a sample of Al that contains the same number of atoms _______grams of Al
Inorganic Chemistry
Classification of Elements and PeriodicityA compound is found to contain 39.99 % carbon, 6.727 % hydrogen, and 53.28 % oxygen by mass What is the empirical formula for this compound?
Inorganic Chemistry
Qualitative analysisA compound is found to contain 26.94 % nitrogen and 73.06 % fluorine by mass. What is the empirical formula for this compound?
Inorganic Chemistry
Preparation and Properties of CompoundsA compound is found to contain 63.65 % nitrogen and 36.35 % oxygen by mass.
QUESTION 1:
The empirical formula for this compound is______?
QUESTION 2:
The molar mass for this compound is 44.02 g/mol.
The molecular formula for this compound is______?
Inorganic Chemistry
Classification of Elements and PeriodicityWhich of the following compounds is incorrectly named?
CaO is calcium oxide
MgSO3 is magnesium sulfite
Mg(OH)₂ is magnesium dihydroxide
NH4NO3 is ammonium nitrate
K3PO4 is potassium phosphate
Inorganic Chemistry
Preparation and Properties of CompoundsThe following chemical equation,
2 Na(s) + 2 H₂O(l) → 2 NaOH(aq) + H₂(g),
is an example of a(n)__________reaction.
A)oxidation-reduction and precipitation
B)oxidation-reduction and acid-base
C)oxidation-reduction
D)precipitation
E)acid-base reaction.
Inorganic Chemistry
Classification of Elements and PeriodicityFor the following reaction, 23.5 grams of iron are allowed to react with 5.58 grams of oxygen gas
iron(s) + oxygen(g) → iron(II) oxide(s)
A)What is the maximum mass of iron(II) oxide that can be formed?
B)What is the FORMULA for the limiting reagent?
C)What mass of the excess reagent remains after the reaction is complete?
Inorganic Chemistry
Classification of Elements and PeriodicityThe following reactions:
Pb2+ + 21-→ Pbl2
2Ce4+ +21₂ + 2Ce³+
HAC + NH3 → NH4 + OẠC
are examples of
A)acid-base reactions.
B)precipitation, acid-base, and redox reactions, respectively.
C)redox, acid-base, and precipitation
reactions, respectively.
D)unbalanced reactions.
E)precipitation, redox, and reactions, respectively.
Inorganic Chemistry
Qualitative analysisYou are given a compound with the formula MCl2,
in which M is a metal. You are told that the metal ion has 27 electrons. What is the identity of the metal?
A)Al
B)Cu
C)Ga
D)Ni
E)Co