Question

Complete the following equations :
(i) $Na_{2}O_{2}+2H_{2}O \to\frac{\left(W\right)}{ }+H_{2}O_{2}$
(ii) $2KO_{2}+2H_{2}O \to\frac{\left(X\right)}{ }+\frac{\left(Y\right)}{ }+O_{2}$
(iii) $Na_{2}O+CO_{2} \to\frac{\left(Z\right)}{ }$

	$W$	$X$	$Y$	$Z$
(a)	$4Na$	$K_2O$	$H_2O$	$Na_2O_2$
(b)	$4Na$	$K_2O$	$H_2O_2$	$Na_2CO_3$
(c)	$4NaOH$	$2KOH$	$H_2O$	$Na_2O_2$
(d)	$2NaOH$	$2KOH$	$H_2O_2$	$Na_2CO_3$

• A. a
• B. b
• C. c
• D. d

Answer 1

Answer: (D)

$Na _2 O _2+2 H _2 O \rightarrow \underset{( W )}{2 NaOH }+ H _2 O _2$
$2 KO _2+2 H _2 O \rightarrow \underset{( X )}{ KOH }+\underset{( Y )}{ H _2 O _2}+ O _2$
$Na _2 O + CO _2 \rightarrow \underset{( Z )}{ Na _2 CO _3}$