## Chemistry (7th Edition)

(a) Acids: $H_2O$ and $CH_3N{H_3}^+$. Bases: $OH^-$ and $CH_3NH_2$ Conjugate acid-base pairs: $H_2O$ and $OH^-$, $CH_3NH_2$ and $CH_3{NH_3}^+$. - Water is acting like an acid. (b) Acids: $HNO_3$ and $H_3O^+$ Bases: $H_2O$ and ${NO_3}^-$ Conjugate acid-base pairs: $H_2O$ and $H_3O^+$, $HNO_3$ and $N{O_3}^-$ - Water is acting like a base.
1. Identify the acids and bases: - The acids are the species that are donating one $(H^+)$, and the bases are the ones that are receiving. 2. Identify the conjugate acid-base pair: - These 2 species have one $(H^+)$ as the only difference between the formulas: For example: $H_2O$ and $H_3O^+$.