JEE Mains · Chemistry · STD 11 - 6.2. Equilibrium - II (icon Equilibrium)
pH of water is 7 at \(25^{\circ} \mathrm{C}\). If water is heated to \(80^{\circ} \mathrm{C}\)., it's pH will :
- A Decrease
- B \(\mathrm{H}^{+}\)concentration increases, \(\mathrm{OH}^{-}\)concentration decreases
- C Remains the same
- D Increase
Answer & Solution
Correct Answer
(A) Decrease
Step-by-step Solution
Detailed explanation
At \(25^{\circ} \mathrm{C}\), pure water has \(\mathrm{pH}=7\) As temperature increased, water molecules dissociate more into hydrogen ions ( \(\mathrm{H}^{+}\)) and hydroxide ions \(\left(\mathrm{OH}^{-}\right)\). This increased dissociation leads to slightly decrease in pH .…
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