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dangina [55]
3 years ago
14

If a solution has a pOH of 8.71, what is the [H+]?

Chemistry
1 answer:
TEA [102]3 years ago
6 0

Answer: 5.1\times 10^{-6}M

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration.

pH=-\log [H^+]

pH+pOH=14

Putting in the values:

pH=14-8.71=5.29

5.29=-log[H^+]

[H^+]=5.1\times 10^{-6}

Thus [H^+] is 5.1\times 10^{-6}M

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Answer:

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Explanation:

This is a problem of freezing point depression, and the formula or expression to use is the following:

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Now, the value of i is the number of moles of particles obtained when 1 mol of a solute dissolves. In this case, we do not know what kind of solution is, so, we can assume this is a non electrolyte solute, and the value of i = 1.

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Now, let's replace in (2):

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<em>This is the molality of solution.</em>

<em>The other data of mass, can be used to calculate the molecular mass of this unknown solid, but it's not asked in the question.</em>

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