Problem: Calculate the pH of a solution in which [H3O+]=9.5×10−9M.Calculate the pH of a solution in which [OH−]=7.1×10−3M.

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Calculate the pH of a solution in which [H3O+]=9.5×10−9M.


The pH and pOH of a compound determine its acidity and basicity.

• pH

▪ pH stands for the negative logarithmic function of hydronium ion concentration
can be calculated using the following equation:

pH=-log H+

Take note that:         [H+] = [H3O+]


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Problem Details

Calculate the pH of a solution in which [H3O+]=9.5×10−9M.

Calculate the pH of a solution in which [OH]=7.1×10−3M.

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