Q. The conjugate base of $H_{2} P O_{4}^{-}$ is

2281 228 AIEEEAIEEE 2004Equilibrium Report Error

A

$P O_{4}^{3 -}$

B

$H P O_{4}^{2 -}$

C

$H_{3} P O_{4}$

D

$P_{2} O_{5}$

Solution:

$∵ 6.02 \times 1 0^{+ 20}$ molecules of urea is present in $= \frac{0.0001 \times 1000}{100} = 0.01 M$