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Question

The pH of a sample of vinegar is 3.76. Calculate the concentration of hydrogen ions in it.


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Solution

Step 1. Formula for pH

pH=-logH+

Here, H+ is the concentration of hydrogen ions.

Step 2. Calculation of hydrogen ions

3.76=-logH+H+=10-3.76=0.000173=1.73×10-4M

Hence, the concentration of hydrogen ions is 1.73×10-4M.


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