Question

What effect does temperature has on ionization and pH of water?

• A. Ionization and pH increases with increase in temperature
• B. Ionization and pH deccreases with increase in temperature
• C. Ionization increases but pH decreases with increase in temperature
• D. Ionization decreases but pH increases with increase in temperature

Answer 1

Answer: (C)

Ionization increases but pH decreases with increase in temperature

The extent of ionization varies with temperature, it increases with an increase in temperature. Thus the concentration of $H_3{O}^{+}$ ions increases with increase in temperature. Hence, its pH decreases with increase in temperature.