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31 October, 11:48

The pOH of a solution is 4.2. Which of the following is true about the solution?

It is acidic and has a pH of 6.8.

It is acidic and has a pH of 9.8.

It is basic and has a pH of 6.8.

It is basic and has a pH of 9.8.

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  1. 31 October, 12:05
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    It is basic and has a pH of 9.8.

    Explanation:

    pOH = 4.2

    we will determine its pH.

    pOH + pH = 14

    pH = 14 - pOH

    pH = 14 - 4.2

    pH = 9.8

    According to pH scale the the pH lower than 7 is consider acidic while pH of seven is neutral and pH greater than 7 is basic.

    The given solution has pH 9.8 it means it is basic.
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