For H_3 P O_3 and H_3 P O_4 the correct choice is - Vidyadip

MCQ

For ${H_3}P{O_3}$ and ${H_3}P{O_4}$ the correct choice is

✓
${H_3}P{O_3}$ is dibasic and reducing
B
${H_3}P{O_3}$ is dibasic and non-reducing
C
${H_3}P{O_4}$ is tribasic and reducing
D
${H_3}P{O_3}$ is tribasic and non-reducing

✓

Answer

Correct option: A.

${H_3}P{O_3}$ is dibasic and reducing

(a) $H - O - \mathop {\mathop P\limits_ \downarrow ^| }\limits_O^H - OH$, hence it is dibasic. It acts as reducing agent also.

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