Ionic Equilibrium JEE Main Solution

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JEE MAIN 2025

23-01-2025 SHIFT-2

Question

pH of water is 7 at $25^{\circ} \mathrm{C}$. If water is heated to $80^{\circ} \mathrm{C}$., it's pH will :

Select the correct option:

Increase

Decrease

$\mathrm{H}^{+}$concentration increases, $\mathrm{OH}^{-}$concentration decrease

Remains the same

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

With increase in temperature, $\mathrm{K}_{\mathrm{w}}$ of water increases So, degree of dissociation of water increases
$\therefore \mathrm{pH}$ as well as pOH of water decrease.

Question Tags

JEE Main

Chemistry

Easy

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