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Question

pH of a solution is 5.0 Its hydrogen ion concentration is decreased by 100 times. The solution will then be:

A
neutral
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B
acidic
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C
basic
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D
more acidic
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Solution

The correct option is A neutral
pH=log[H+]=5.

Thus [H+]=105.

The hydrogen ion concentration is decreased by 100 times.
Thus [H+]=107.

pH=log[H+]=log(10)7=7.

Hence, the solution will be neutral.

Option A is correct.

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