Quiz on Aqueous Chemical Reactions

In a redox reaction, the species that is reduced will ___ electrons, becoming more _____ charged.

• lose; negatively

• lose; positively

• gain; positively

• gain; negatively

Which of the following represents the net ionic equation for the precipitation reaction between sodium carbonate and magnesium sulfate?

• Na₂CO₃ + MgSO₄ --> MgCO₃ + Na₂SO₄

• 2Na⁺ + CO₃^-2 + Mg⁺² + SO₄^-2 --> Mg⁺² + CO₃^-2 + 2Na⁺ + SO₄^-2

• 2Na⁺ + SO₄^-2 --> Na₂SO₄

• CO₃^-2 + Mg⁺² --> MgCO₃

Tags

NGSS.HS-PS1-7

A precipitation reaction must...

• Have a solid ionic product from aqueous reactants

• Have only gaseous products from gaseous reactants

• Have only aqueous products from aqueous reactants

An acid is defined as a...

• proton donor

• proton acceptor

What is the oxidation number of N in NO₂^1-?

• 0

• -1

• 2

• 3

Chose the salts that are soluble:

• sodium

• potassium

• nitrates

• ammonium

What are the spectator ions in this reaction? Fe⁺³_(aq) + 3Cl^-1_(aq) + 3Na⁺¹_(aq) + 3OH^-1_(aq) → Fe(OH)_3(s) + 3Na⁺¹_(aq) + 3Cl^-1_(aq)

• Fe⁺³ and Cl^-1

• Na⁺¹ and Cl^-1

• Fe⁺³ and Na⁺

• Na⁺¹ and OH^-1

Spectator ions _____________________________.

• undergo chemical change during a chemical reaction.

• do not undergo chemical change during a chemical reaction.

• wear spectacles during a chemical reaction.

If an atom loses electrons during a chemical reaction, the atom was:

• Oxidized
• Reduced
• Neutralized
• Precipitated

Tags

NGSS.HS-PS1-2

Identify the species reduced in the following reaction.

Fe_(s) + 2 Ag⁺_(aq) → Fe²⁺_(aq) + 2 Ag_(s)

• Fe

• Ag

• none of these

• None of the above