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RideAnS [48]
3 years ago
14

A solution has a pOH of 8.20. What is the concentration of H3O+?

Chemistry
1 answer:
Allisa [31]3 years ago
3 0

The correct answer is B. 1.6\times 10^{-6}

Explanation

The question provides us with information about the concentration of [OH^{-} ] and we are supposed to use this information to find the [H^{+} ] concentration. The pH of a solution gives us information about [H^{+} ]

If we the reaction is in equilibrium and with standard conditions of 25°C, then pH is given by the formula

14 = pH + pOH\\\implies pH= 14 - pOH= 14-8.20= 5.8.

Once we find the pH we use the relationship pH= -log[H^{+} ], then the [H^{+} ],is given by

pH = -log[H^{+} ]\\\implies [H^{+} ]= 10^{-pH} = 10^{-5.8}= 1.58 \times 10^{-6}

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