Reactions in Solution

KOH

• Soluble 
• Insoluble

PbI₂

• Soluble
• Insoluble

When solutions of MgCO₃ and Fe₂(SO₄)₃ are combined, what precipitate(s) forms?

• MgSO₄

• neither form a precipitate

• MgSO₄ and Fe₂(CO₃)₃

• Fe₂(CO₃)₃

Identify the spectator ion(s) in the equation: 2Ag⁺(aq) + 2NO₃^–(aq) + 2Na⁺(aq) + S^2–(aq) --> Ag₂S(s) + 2Na⁺(aq) + 2NO₃^–(aq)

• 2Ag⁺(aq) + 2NO^3–(aq)

• 2Na⁺(aq) + 2NO₃^–

• 2Na⁺(aq) + S^2–(aq)

• Ag₂S(s) + 2Na⁺(aq

Is calcium oxidized or reduced in the following reaction? 
2 CaO--> 2 Ca + O₂

• Oxidized
• Reduced

What is the oxidation number of chlorine in HClO?

• 0

• -1

• +1

• +5

Reduction is the ___________ of electrons.

• loss

• gain

• sharing

• transfer

Which of the following represents oxidation?

• C → CH₄

• Fe³⁺ → Fe²⁺

• Cl₂ → 2Cl^-

• Zn → ZnO

Substance that oxidizes another substance by accepting its electrons.

• reducing agent

• oxidation number

• disproportionation

• oxidizing agent

Which equation represents a redox reaction?

• NaOH + HNO₃ → NaNO₃ +H₂O

• 2AgNO₃ + Zn → Zn(NO₃)₂ + 2Ag

• 2NaCl + Pb(NO₃)₂ → PbCl₂ + 2NaNO₃

• CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂