Question

At 25°C, the degree of ionization of pure water at equilibrium is:

• A. 20 per 10⁹ molecules
• B. 10 per 10⁹ molecules
• C. 2 per 10⁹ molecules
• D. 12 per 10⁹ molecules

Hint:

Remember, only 2 out of 109 water molecules ionize at standard temperature (25°C).

Answer 1

The Correct Option is C

At 25 °C, pure water undergoes very slight ionization, with only 2 water molecules out of 109 dissociating into \(H^+\) and OH ions.