what-is-the-balanced-equation-for-the-following-redox-reaction-cr-s-no3-aq-no-g-

Question

What is the balanced equation for the following redox reaction?

Cr(s) + NO₃^-(aq) → NO(g) + Cr³⁺(aq)

How much 0.384 M NaNO₃ solution in mL is needed to thoroughly react with 4.23 g of Cr?

Accepted Answer

Cr (s) + NO₃^-(aq) + 4 H⁺ (aq) → NO(g) + 2 H₂O (l) + Cr³⁺(aq);
212 mL of 0.384 M NaNO₃

Answer

Cr (s) + 3 NO₃^-(aq) + 4 H⁺ (aq) → 3 NO(g) + 2 H₂O (l) + Cr³⁺(aq);
4.23 mL of 0.384 M NaNO₃

Answer

2 Cr (s) + NO₃^-(aq) + 4 H⁺ (aq) → NO(g) + 2 H₂O (l) + 2 Cr³⁺(aq);
31.2 mL of 0.384 M NaNO₃

Answer

2 Cr (s) + 3 NO₃^-(aq) + 4 H⁺ (aq) → 3 NO(g) + 2 H₂O (l) + 2 Cr³⁺(aq);
384 mL of 0.384 M NaNO₃