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NCERT Class XI Chemistry Equilibrium Solutions

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Question : 42 of 73
Marks: +1, -0
The pH of a sample of vinegar is 3.76. Calculate the concentration of hydrogen ions in it.
Solution:  
We know that pH = – log [H+][H^{+}]
∴ [H+][H^{+}] = antilog[–pH] = antilog(–3.76) = 1.738 × 10−4 M10^{-4}\,\mathrm{M}
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