Gen Chem I Test 2 Review

What is the coefficient for HCl after balancing the following equation:

PCl₅ + H₂O -> POCl₃ + HCl

• 1

• 2

• 3

• 4

What is the coefficient for O₂ after balancing the following equation:

C₄H₁₀ + O₂ -> CO₂ + H₂O

• 5

• 13

• 8

• 10

What is the coefficient for O₂ after balancing the following equation:

KClO₃ -> KCl + O₂

• 1

• 2

• 3

• 4

Indicate what type of reaction the following represents:

Ca + Ba -> CaBr₂

• Synthesis

• Single-Replacement

• Double-Replacement

• Decomposition

Determine the oxidation states of the elements in the compound:

H₃PO₄

• H +5, P +1, O −2

• H +3, P +1, O −2

• H +1, P +3, O −2

• H +1, P +5, O -2

Classify the following reaction:

Na₂S + 2HCl -> 2NaCl + H₂S

• Oxidation-Reduction (Na is oxidized, H is reduced)

• Acid-Base

• Acid-Base (Neutralization)

• Oxidation-Reduction: (H is oxidized, Na is reduced)

Determine the number of moles of chlorine, Cl₂, required to react with 10.0 g of sodium metal, Na, to produce sodium chloride, NaCl

• 0.578 mol Cl₂

• 0.435 mol Cl₂

• 0.217 mol Cl₂

• 2.89 mol Cl₂

Determine the number of moles of sodium nitrate, NaNO₃, required to produce 128 g of oxygen. (NaNO2 is the other product.)

• 12.00 mol NaNO₃

• 4.00 mol NaNO₃

• 16.00 mol NaNO₃

• 8.00 mol NaNO₃

What is the limiting reactant in a reaction that produces sodium chloride from 8 g of sodium and 8 g of diatomic chlorine?

• NaCl

• Na

• Cl₂

How many molecules of the sweetener saccharin, C₇H₅NO₃S, can be prepared from 30 C atoms, 25 H atoms, 12 O atoms, 8 S atoms, and 14 N atoms?

• 2

• 5

• 7

• 4