pBlock ElementsII 1 Question 26
26. For $\mathrm{H} _{3} \mathrm{PO} _{3}$ and $\mathrm{H} _{3} \mathrm{PO} _{4}$, the correct choice is
$(2003,1 M)$
(a) $\mathrm{H} _{3} \mathrm{PO} _{3}$ is dibasic and reducing
(b) $\mathrm{H} _{3} \mathrm{PO} _{3}$ is dibasic and non-reducing
(c) $\mathrm{H} _{3} \mathrm{PO} _{4}$ is tribasic and reducing
(d) $\mathrm{H} _{3} \mathrm{PO} _{3}$ is tribasic and non-reducing
Show Answer
Answer:
Correct Answer: 26. (a)
Solution:
- $\mathrm{H} _{3} \mathrm{PO} _{3}$ is a dibasic, reducing acid. $\mathrm{H} _{3} \mathrm{PO} _{4}$ is tribasic, non-reducing acid.
Dibasic, reducing
Tribasic, non-reducing
