Question

10. What is the order of dissociation constants K1, K2 and
Kfor H3PO4?
11. Which of the following is/are not known ?
PC12, AsCl3, SbCl3, NCIS, BiCl,
12. BH4 and NH are isolobal. Explain.
13. On being passed through water, PH, forms bubbles
but NH3 dissolves. Why?

14. Why PH, has lower boiling point than NH3 ?

15. Which is more stable PCl, or
or PC13 ?

16. Why is nitrous acid (HNO2) oxidant as well as
reductant ?
17. How do you account for the reducing power of
H2PO2?
​

Answer 1

Answer:

Answer no 16

The oxidation state of N in nitrous acid (H—O—N=0) is +3 which lies in between its lowest oxidation state of —3 and highest oxidation state of +5. ... Thus, nitrous acid acts both as an oxidant as well as a reductant.

Answer 2

• ans no 11

BiCl⁵...........