Question

The pH of neutral water at ${25}^0$C is $7.0$. As the temperature increases, ionization of water increases, however the concentration of $H^{+}$ ions and $O{H}^{-}$ ions are equal. What will be the pH of pure water at ${60}^0$C?

• A. Equal to $7.0$
• B. Greater than $7.0$
• C. Less than $7.0$
• D. Equal to $0$

Answer 1

Answer: (C)

Less than $7.0$

At higher temperature pH and pOH of pure water decreases so if will be less than $7$. It doesn't mean water is acidic it is always neutral as $pH=pOH$