Question

The pH of aqueous solution of nh4cl of hcn is 9.2 into 10 power minus 10 and KB of nh4oh is 1.8 into 10 power minus 5

Answer 1

$\huge\star\underline\mathfrak\pink{answer}\star$

Smaller the pKa , the stronger the acid. Very strong acids have pKa less than 1, moderately strong acids have pKa in between 1 to 5 and weak acids have pKa above 5.

Ka is directly proportional to the H

+

concentration and Kb is directly proportional to the OH

−

concentration.

In this case since K

b

>K

a

and K

b

<<1,NH

4

CN is weakly basic.!¡!

Answer 2

Answer:

>7

Explanation:

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