When the hydrogen ion concentration [H$^+$] changes by a factor of 1000, the value of pH of the solution __________
Solution
Let the initial concentration of $\mathrm{H}^{+}$ be 1
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$\therefore \left[\mathrm{H}^{+}\right]_{\mathrm{i}}=1 \Rightarrow \mathrm{pH}=0$
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It changes by 1000 units
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$\therefore \left[\mathrm{H}^{+}\right]_{\mathrm{f}}=10^{3} \Rightarrow \mathrm{pH}=-3$
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$\therefore \mathrm{pH}$ decreases by 3 units
About this question
Subject: Chemistry · Chapter: Equilibrium · Topic: Chemical Equilibrium and Kc, Kp
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