Question

Pure water does not conduct electricity because it is:

• A. neutral
• B. readily decomposed
• C. almost unionised
• D. completely ionised

Answer 1

The correct option is C almost unionised

For pure water $K_w=\left[H^{+}\right]\left[O{H}^{-}\right]={10}^{-14}$

$\therefore \left[H^{+}\right]=\left[O{H}^{-}\right]={10}^{-7}M$

The concentration of ions is very less as water is almost unionised.

$\therefore$ it does not conduct electricity.