Engineering Board Exam Reviewer · Chemistry · medium

At 25 °C, the ion product of water Kw is:

1. 1.0 × 10-14
2. 1.0 × 10-7
3. 1.0 × 107
4. 14

Answer

A. 1.0 × 10-14

Solution

Kw = [H+][ OH-] = 1.0 × 10-14; pH + pOH = 14.

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