3 years ago

Help please i beg someone answer and explain

Chemistry

1 answer:

Novosadov [1.4K]3 years ago

3 0

Answer:

Q,N,1) lithium + hydrochloric -> lithium chloride + Hydrogen.

word equation ( 2li + 2HCl -> 2liCl + H2)

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Volume of solution = 1.00 L

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First we have to calculate the value of $pK_a$ .

The expression used for the calculation of $pK_a$ is,

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Now put the value of $K_a$ in this expression, we get:

$pK_a=-\log (6.5\times 10^{-5})$

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Now we have to calculate the pH of a solution.

Using Henderson Hesselbach equation :

$pH=pK_a+\log \frac{[Salt]}{[Acid]}$

Now put all the given values in this expression, we get:

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$pH=4.5$

Therefore, the pH of a solution is, 4.5

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4 years ago