Question

The ionic product of water calculated by a student was found to be $1\times {10}^{16}{mole}^2/l^2$ at $5^{o}C$. What is the nature of solution with $pH=7$ at same temperature?

• A. Basic
• B. Acidic
• C. Neutral
• D. Cannot be predicted

Answer 1

The correct option is B Acidic

When the ionic product of water is $1\times {10}^{16}mol{e}^2/l^2$, then pH of water where $\left[H^{+}\right]=\left[O{H}^{-}\right]$= $8$. When $pH<8$, solution has more of $H^{+}$ ions thus are acidic in nature. Solution of pH = 7 would be acidic in this case.