1.3 Limiting and Excess

Zn + 2HCI → ZnCI₂ + H₂. If 0.3 mol Zn and 0.52 mol HCI added, which is limiting?

• Zn
• HCI
• ZnCI₂
• None of the above

Tags

NGSS.HS-PS1-7

Zn + 2HCI → ZnCI₂ + H₂. 0.3 mol Zn added (limiting), how many mol of H₂ produced?

• 0.3 mol
• 0.6 mol
• 1 mol
• None of the above

1Pb(NO₃)₂+ 2NaI→ 1PbI₂ + 2NaNO₃. If 0.2 mol of Pb(NO₃)₂ and 0.6 mol NaI add, which is limiting?

• NaI
• Pb(NO₃)₂
• Pb(NO₃)₂ and NaI
• None of the above

Tags

NGSS.HS-PS1-7

1Pb(NO₃)₂ + 2NaI→1PbI₂ + 2NaNO₃. 0.2 mol of Pb(NO₃)₂ added (limiting), how many mol of NaNO₃ produced?

• 0.2 mol
• 2 mol
• 0.4 mol
• 0.1 mol

Mg + 2HCI → MgCI₂ + H₂. If 0.02 mol Mg and 0.03 mol HCI added, which is in excess?

• Mg
• HCI
• H₂
• MgCI₂

Tags

NGSS.HS-PS1-7

Mg + 2HCI → MgCI₂ + H₂. If 0.02 mol Mg is added, how many mol of HCI needed to react with it?

• 0.02
• 4
• 0.04
• None of the above

Mg + 2HCI → MgCI₂ + H₂. If 0.02 mol HCI is added (limiting), how many mol of MgCI₂ produced?

• 0.02
• 2
• 0.01
• 1

2NaOH + H₂SO₄ →Na₂SO₄ + H₂O. If 0.02 mol NaOH and 0.025 mol H₂SO₄ added, which is limiting?

• H₂SO₄
• NaOH
• Na₂SO₄
• H₂O

2NaOH + H₂SO₄ → Na₂SO₄ + H₂O. If 0.020 mol NaOH and 0.025 mol H₂SO₄ added, which is excess?

• H₂SO₄
• NaOH
• Na₂SO₄
• H₂O

2NaOH + H₂SO₄ → Na₂SO₄ + H₂O. If 0.025 mol NaOH added and H₂SO₄ is in excess, how much H₂O produced?

• 0.025
• 0.0125
• 0.050
• 1