Long Quiz Review

In the reaction between Na₂SO₄ and BaCl₂, which of the following are spectator ions? Balanced molecular equation: Na₂SO₄ (aq) + BaCl₂ (aq) → BaSO₄ (s) + 2NaCl (aq)

• Na⁺ and Cl⁻
• Ba²⁺ and SO₄²⁻
• Ba²⁺ and Na⁺
• SO₄²⁻ and Cl⁻

What is the net ionic equation for the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH)? Balanced molecular equation: HCl (aq) + NaOH (aq) → NaCl (aq) + H₂O (l)

• H⁺ (aq) + OH⁻ (aq) → H₂O (l)
• HCl (aq) + NaOH (aq) → NaCl (aq) + H₂O (l)
• Na⁺ (aq) + OH⁻ (aq) → NaOH (aq)
• H⁺ (aq) + Cl⁻ (aq) + Na⁺ (aq) + OH⁻ (aq) → Na⁺ (aq) + Cl⁻ (aq) + H₂O (l)

Tags

NGSS.HS-PS1-7

What is the net ionic equation for the reaction between barium chloride (BaCl₂) and sulfuric acid (H₂SO₄)? Balanced molecular equation: BaCl₂ (aq) + H₂SO₄ (aq) → BaSO₄ (s) + 2HCl (aq)

• Ba²⁺ (aq) + SO₄²⁻ (aq) → BaSO₄ (s)
• Ba²⁺ (aq) + Cl⁻ (aq) → BaCl₂ (aq)
• Ba²⁺ (aq) + 2Cl⁻ (aq) + 2H⁺ (aq) + SO₄²⁻ (aq) → BaSO₄ (s) + 2H⁺ (aq) + 2Cl⁻ (aq)
• BaCl₂ + H₂SO₄ → BaSO₄ + 2HCl

In the reaction between CuSO₄ and NaOH, which ions are spectator ions? Balanced molecular equation: CuSO₄ (aq) + 2NaOH (aq) → Cu(OH)₂ (s) + Na₂SO₄ (aq)

• Cu²⁺ and OH⁻
• Na⁺ and SO₄²⁻
• Cu²⁺ and SO₄²⁻
• Na⁺ and OH⁻

Which of the following are the spectator ions in the reaction between FeCl₃ and NaOH? Balanced molecular equation: FeCl₃ (aq) + 3NaOH (aq) → Fe(OH)₃ (s) + 3NaCl (aq)

• Na⁺ and Cl⁻
• Fe³⁺ and Cl⁻
• Fe³⁺ and Na⁺
• OH⁻ and Cl⁻

What is the correct net ionic equation for the following reaction? Na₃PO₄(aq) + 3AgNO₃(aq) → Ag₃PO₄(s) + 3NaNO₃(aq)

• PO₄³⁻(aq) + 3Ag⁺(aq) → Ag₃PO₄(s)
• Na₃PO₄(aq) + 3AgNO₃(aq) → Ag₃PO₄(s) + 3NaNO₃(aq)
• 3Na⁺(aq) + PO₄³⁻(aq) + 3Ag⁺(aq) + 3NO₃⁻(aq) → Ag₃PO₄(s) + 3Na⁺(aq) + 3NO₃⁻(aq)
• 3Na⁺(aq) + 3NO₃⁻(aq) → 3NaNO₃(aq)

Tags

NGSS.HS-PS1-7

A solution contains 80.0 g of ethanol (C₂H₅OH) in 220.0 g of water. If an additional 100.0 g of water is added, what is the new mass percent of ethanol?

• 22.2%
• 20.0%
• 26.7%
• 16.0%

A sulfuric acid (H₂SO₄) solution is 20% H₂SO₄ by mass and has a density of 1.14 g/mL. Determine its molarity.