With increase in the temperature of pure (distilled) water, its____________________?
Correct answer: A. pOH and pH both decreases
- A. pOH and pH both decreases
- B. pOH decreases and pH increases
- C. pH and pOH both increases
- D. pH decreases and pOH increases
Explanation
For pure water, increasing temperature increases the ionisation constant, so the concentrations of H+ and OH− both increase equally. Consequently, both pH and pOH decrease while the water remains neutral.
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