Question

what is conjugate base ?? write the conjugate base of HCN and NH4+

Answer 1

Conjugate base

• When an acid loses a hydrogen ion, it leads to the formation of a substance called a Conjugate base.
• Conjugate bases are negatively charged substances with high pH value.

Conjugate base of HCN

• HCN is an acid. When it is treated with water, it readily loses one hydrogen and forms $CN^-$ as a conjugate base and $H_3O^+$ as conjugate acid.
• The chemical reaction leading to the formation of conjugate base of $HCN$ is as follow:

$HCN+H_2O$⇄$CN^-+H_3O^+$

Conjugate base of $NH_4^+$

• When $OH^-$ combines with $NH_4^+$ it leads to the formation of conjugate base $NH_3$ by losing one hydrogen atom.
• The chemical reaction involved in the formation of conjugate base of $NH_4^+$ is as follow:

$NH_4^{+} + OH^-$⇄$NH_3+H_2O$

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