Answer to Question #226877 in General Chemistry for Chrissy

Question

In which mixture is NaOH the limiting reagent?

A. 0.20mol NaOH + 0.10mol H₂SO₄

B. 0.10mol NaOH + 0.10mol H₂SO₄

C. 0.20mol NaOH + 0.10mol HNO₃

D. 0.10mol NaOH + 0.10mol HNO₃

Answer 1

Reactions:

2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O

For one mole of H₂SO₄ we need two moles of NaOH.

Option A: equivalent quantities

Option B: NaOH is limiting rectant.

NaOH + HNO₃ → NaNO₃+ H₂O

For one mole of HNO₃ we need one mole of NaOH.

Option C: NaOH in excess

Option D: equivalent quantities

Answer: option B