With respect to the following reaction, which is the correct statement? $2 H N O_{3} (a q) + 3 H_{2} S (a q) \to 3 S (s) + 2 N O (g) + 4 H_{2} O$ $2HNO_3(aq) + 3H_2S(aq) rarr 3S(s)+2NO(g) +4H_2O$ ; a. both sulfur and nitrogen are reduced; b. nitrogen is reduced and sulfur is oxidized; c. oxygen is oxidized; d. this is not redox.

Question

2740 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-09-01T17:21:10

$b .$ $b.$

$2 H N O_{3} + 3 H_{2} S \to 3 S ↓ + 2 N O ↑ + 4 H_{2} O$ $2HNO_3 + 3H_2S rarr 3Sdarr +2NOuarr +4H_2O$

Can you write the redox half equations?

Nitrate ion, $N (+ V)$ $N(+V)$ , is reduced to nitrous oxide, $N (+ I I)$ $N(+II)$ .

$H N O_{3} + 3 H^{+} + 3 e^{-} \to N O + 2 H_{2} O$ $HNO_3 + 3H^(+) +3e^(-) rarr NO + 2H_2O$

Try to represent the sulfur oxidation.

This is (I take it) a first year chemistry problem? Surely it's at least A level?

With respect to the following reaction, which is the correct statement? 2HNO3(aq)+3H2S(aq)→3S(s)+2NO(g)+4H2O2HNO_3(aq) + 3H_2S(aq) rarr 3S(s)+2NO(g) +4H_2O; a. both sulfur and nitrogen are reduced; b. nitrogen is reduced and sulfur is oxidized; c. oxygen is oxidized; d. this is not redox.