Question

$\left(P\right)+H_{2}O\to NaOH$
$\left(P\right)\stackrel{O_2,{400}^{o}C}{\to }\left(Q\right)\stackrel{H_{2}O,at{25}^{o}C}{\to }NaOH+O_2$

(Q) is used for oxygenating in submarine. (P) and (Q) are:

• A. $N{a}_2{O}_2$and$O_2$
• B. $N{a}_{2}O$and$O_2$
• C. $N{a}_2{O}_2$and$N{a}_{2}O$
• D. $N{a}_{2}O$and$N{a}_2{O}_2$

Answer 1

The correct option is D $N{a}_{2}O$and$N{a}_2{O}_2$

1) $N{a}_{2}O+H_{2}O\to 2NaOH$.

2) $4NaOH+O_2\to 2H_{2}O+2N{a}_2{O}_2$
3) $2N{a}_2{O}_2+2H_{2}O\to 4NaOH+O_2$
So, P and Q are $N{a}_{2}O$and$N{a}_2{O}_2$.
Hence, option D is correct.