The pH of solutions A, B, C, and D are 1, 8, 13, and 5 respectively. Arrange them in increasing order of acidity.

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Solution

The pH values range from 0 to 14. The values less than 7 represent an acidic solution, above 7 indicate a basic solution and a solution with pH 7 is neutral. Lower the pH, higher the acidity. Therefore the increasing order of acidic nature is C < B < D < A.

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