Chem 1010 - General Chemistry 1 » Summer 2022 » Quiz 2

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Question #1
Which of the following cannot be determined from a balanced chemical equation?
A.   Whether the reaction will proceed as written
B.   The number of molecules of reactants and products.
C.   The number of atoms of each element reacting.
D.   The number of moles of reactants and products.
Question #2
For the reaction given below, how many moles of aluminum will react if 12 moles of Br2 react and 8 moles of AlBr3 are produced? 2 Al + 3 Br2  →  2 AlBr3
A.   16
B.   4
C.   8
D.   12
Question #3
The Roman numerals in the reaction given represent the coefficients in the balanced chemical equation. What are the values of the coefficients? I CH3OH + II O2 → III CO2 + IV H2O I II III IV
A.   1 3 1 2
B.   2 5 2 2
C.   1 2 1 2
D.   2 3 2 4
Question #4
Which statement about the reaction below is true, given large amounts of reactants? NaCl + AgNO3 → NaNO3 + AgCl
A.   AgCl is insoluble in water and will precipitate.
B.   AgNO3 is insoluble in water and no reaction will occur.
C.   Both NaNO3 and AgCl are insoluble in water and will precipitate.
D.   NaNO3 is insoluble in water and will precipitate.
Question #5
Write a balanced chemical equation for the exchange reaction that occurs when KOH(aq) is added to FeCl3(aq).
A.   3 KOH(aq) + FeCl3(aq) → K3Fe(s) + 3 HClO(aq)
B.   KOH(aq) + FeCl3(aq) → FeOH(aq) + KCl(s)
C.   KOH(aq) + FeCl3(aq) → FeOH(s) + KCl(aq)
D.   3 KOH(aq) + FeCl3(aq) → Fe(OH)3(s) + 3 KCl(aq)
Question #6
What is the net ionic equation for the reaction of Ca(NO3)2 and Na2SO4?
A.   Na2+ + 2NO3−  → Na(NO3)2
B.   Ca2+ + SO42− → CaSO4
C.   2Ca+ + SO42− → Ca2SO4
D.   Ca+ + SO42− → CaSO4
Question #7
All of the following are strong electrolytes except:
A.   HNO3
B.   CH3COOH.
C.   H2SO4.
D.   NaOH
Question #8
Write a balanced chemical equation for the reaction of aqueous ammonia with aqueous sulfuric acid.
A.   2 NH3(aq) + H2SO4(aq) → N2S(g) + 4 H2O(l)
B.   2 NH3(aq) + H2SO4(aq) → 2 (NH4)2SO4(aq) + 2 H2O(l)
C.   2 NH3(aq) + H2SO4(aq) → 2 NH4+(aq) + SO42-(aq)
D.   2 NH3(aq) + H2SO4(aq) → SO2(g) + 2 NH2S(aq) + 2 H2O(l)
Question #9
What is the reducing agent in the reaction below? Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s)
A.   SO42−
B.   Cu2+
C.   Zn
D.   Zn2+
Question #10
Which substance is oxidized in the reaction below? NaNO3 + Pb → NaNO2 + PbO
A.   NaNO3
B.   Na+
C.   PbO
D.   none of these choices

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