Question

Fill in the blanks :
(i) $C{a}_3{P}_2+6HCl\to 3CaC{l}_2$ + __p__
(ii) $P_4+3NaOH+3H_{2}O\to$___q___+ 3$Na{H}_{2}P{O}_2$
(iii) $P{H}_{4}I+KOH\to KI+H_{2}O$ + ___r___
p, q and r respectively are:

• A. $P{H}_3$, $H_{3}P{O}_3$, $P{I}_3$
• B. $P{H}_3$,$P{H}_3$,$P{H}_3$
• C. $PC{l}_3$,$H_{3}P{O}_4$,$P{H}_3$
• D. $PC{l}_5$,$P{H}_3$,$P_4{O}_6$

Answer 1

Answer: (B)

$P{H}_3$,$P{H}_3$,$P{H}_3$

p, q and r respectively are $P{H}_3,P{H}_3,P{H}_3$

(i) $C{a}_3{P}_2+6HCl\to 3CaC{l}_2+P{H}_3$

(ii) $P_4+3NaOH+3H_{2}O\to P{H}_3+3Na{H}_{2}P{O}_2$

(iii) $P{H}_{4}I+KOH\to KI+H_{2}O+P{H}_3$

Hence option B is correct.