Question

The reaction of zinc with dilute and concentrated nitric acid, respectively, produces:

• A. $N_{2}O$ and $N_{2}O$
• B. $N_{2}O$ and $N{O}_2$
• C. $N{O}_2$ and $N_{2}O$
• D. $NO$ and $N_{2}O$

Answer 1

The correct option is B $N_{2}O$ and $N{O}_2$

$Zn+\underset{(conc.)}{4HN{O}_3}\to Zn(N{O}_3{)}_2+2N{O}_2+2H_{2}O$
$4Zn+\underset{(dil.)}{10HN{O}_3}\to Zn(N{O}_3{)}_2+N_{2}O+5H_{2}O$