The pH of pure water `(H_2O)` is ________ at 25 degree Celsius.

Options

A. 7
B. 6
C. 8
D. 9

Answer

A

Explanation

As the temperature of water goes down, its pH goes up. For the following temperatures in degrees `""^@C`, 25, 20, 10, 0, correspond to pHs of 7.0, 7.08, 7.27, and at 0 degrees C, 7.47. But, at different pHs, water still is at a neutral pH.