5/22 Final Exam Review

What is the formula of the ion hydrogen sulfite, which has a charge of −1?

• SO₃ ^-1

• SO₄ ^-1

• HSO₃ ^-1

• HSO₄ ^-1

Which of the following is the correctly balanced equation for the reaction when the sodium phosphate and copper (II) chloride mixed and reacted.

A 2 CuCl₂ (aq) + Na₃PO₄ (aq) --> Cu₂PO₄ (s) + 3 NaCl₂ (aq)

B Cu₂Cl (aq) + Na₃PO₄ (aq) --> Cu₂PO₄ (s) + 3 NaCl (aq)

C 3 CuCl₂ (aq) + 2 Na₃PO₄ (aq) --> Cu₃(PO₄)₂ (s) + 6 NaCl (aq)

D Cu₂Cl (aq) + 2 Na₃PO₄ (aq) --> Cu₃(PO₄)₂ (s) + Na₃Cl (aq)

• A 2 CuCl₂ (aq) + Na₃PO₄ (aq) --> Cu₂PO₄ (s) + 3 NaCl₂ (aq)

• B Cu₂Cl (aq) + Na₃PO₄ (aq) --> Cu₂PO₄ (s) + 3 NaCl (aq)

• C 3 CuCl₂ (aq) + 2 Na₃PO₄ (aq) --> Cu₃(PO₄)₂ (s) + 6 NaCl (aq)

• D Cu₂Cl (aq) + 2 Na₃PO₄ (aq) --> Cu₃(PO₄)₂ (s) + Na₃Cl (aq)

Which of the following has the highest mass?

• 50.0 g water

• 50.0 mol NaCl

• 50.0 molecules carbon dioxide

• 50.0 L of oxygen at STP

Which of the elements in the following reaction has been reduced?

Zn + 2H⁺ → Zn²⁺ + H₂

• Zinc

• Hydrogen

• Both Hydrogen and Zinc

• Neither Hydrogen nor Zinc

Solid zinc oxide is added to hydrochloric acid to form zinc chloride in water. How many moles of zinc chloride will be produced when 112 grams of zinc oxide is used?

ZnO + 2 HCl → ZnCl₂ + H₂O

• 1.38 mols

• 3.07 mols

• 56.0 mols

• 112 mols

The equation for the formation of lithium bromide is: Li + Br --> LiBr

If 5.0 grams of each reactant are used. Which substance is the limiting reagent?

• Lithium

• Bromine

• Lithium bromide

• There is no limiting reagent

The temperature of a gas in a rigid steel container is increased from 100 K to 200 K. Which of the following is the most likely effect of this change on the other three variables used to describe the behavior of a gas?

• The pressure of the gas is doubled, while the volume and mass remain constant.

• The pressure and volume of the gas are doubled, while the mass remains constant.

• The volume of the gas is halved, while the pressure and the mass remain constant.

• The mass and volume of the gas is halved, while the pressure remains constant.

At STP, which of the following would have the same number of molecules at 1 L of C₂H₄ gas? Assume that each behaves as an ideal gas.

• 0.5 L of H₂ gas

• 1 L of Ne gas

• 2 L of H₂O

• 3 L of Cl₂ gas

All of the following containers have one mole of gas and have the same volume and pressure. Which container has the molecules with the slowest average kinetic energy?

• Container 1: 100 K

• Container 2: 200 K

• Container 3: 300 K

• Container 4: 400 K

Use the solubility rules to determine which compound will precipitate out of solution when an aqueous solution of Na₂SO₄ is combined with an aqueous solution of Pb(NO₃)₂ .

• PbSO₄

• Pb(SO₄)₂

• Na₂SO₄

• Na(NO₃)₂