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Factors Affecting Alpha

Calculate the...

Question

Calculate the the $p H$ at the equivalence point in a titration of $50.0 m L$ of $0.40 M$ ${N H}_{10}$ with $0.40 M$ $H C l$ .

A

4.98

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B

6.65

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C

7.35

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D

9.12

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Solution

The correct option is A $4.98$
A solution that resists change in $p H$ value upon addition of a small amount of strong acid or base (less than $1$ %) or when the solution is diluted is called buffer solution.
Acidic buffer solution: An acidic buffer solution consists of a solution of a weak acid and its salt with a strong base.
For acidic buffer solution, $p H = p K_{a} + l o g \frac{[s a l t]}{[a c i d]}$
$∴ p H = p K_{a} + l o g \frac{[0.1]}{[0.1]} = 4.95$

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Q. Calculate the hydronium ion concentration and pH at the equivalence point in a titration of

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Q. Calculate the hydronium ion concentration and the

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