氨-氯化铵缓冲溶液 NH4+→NH3+H3O Ka CNHs x [H] CNH [H= Ka X CNH CNH3 pH=-pKa log CNH3 CNH体氨-氯化铵缓冲溶液 𝐾𝑎 = 𝑐𝑁𝐻3 × [𝐻 𝑐𝑁𝐻4 + [𝐻] = 𝐾𝑎 × 𝑐𝑁𝐻4 + 𝑐𝑁𝐻3 pH = −𝑝𝐾𝑎 + 𝑙𝑜𝑔 𝑐𝑁𝐻3 𝑐𝑁𝐻4 +