Resources Hint Check Answer Question 16 of 17 ) What is the K, reaction of HCN?...

Question

Question

science chemistry

Answer 1

Answer #1

1)

In Ka reaction, acid donates its H+

The Ka reaction of HCN is:

HCN(aq) -> H⁺(aq) + CN^-(aq)

2)

use:

Kb = Kw/Ka

Kw is dissociation constant of water whose value is 1.0*10^-14 at 25 oC

Kb = (1.0*10^-14)/Ka

Kb = (1.0*10^-14)/6.2*10^-10

Kb = 1.613*10^-5

Answer: 1.6*10^-5

Answer 2

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