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Artyom0805 [142]
3 years ago
6

How can I get the percentage recovery?

Chemistry
1 answer:
frosja888 [35]3 years ago
3 0
If you collected 7.0 grams of something the percentage recovery would be 70% (7/10 x 100).
^
^
^
A percentage recovery is something like that
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A buffer solution contains a weak acid, HA , and its conjugate base, A − . The buffer solution has a pH of 5.76 , and the weak a
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Answer:

The relationship is expressed as follows: K_{a} = \frac{[H+][A-]}{[HA]}

Explanation:

Most acidic substances are weak acids and are therefore only partially ionized in acqeous solution. We cab use the equilibrium constant for the ionization of acid to express the extent to which the weak acid ionizes. If we represent a general weak acid as HA, we can write the equation for its ionization reaction like this:

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To calculate the pH of a weak acid, we use the equilibrium concentration of the reacted species and product.

Take for example:

HA → H + A⁻

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Knowing that x amount of acid reacts, we can solve like this:

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thus, the pH of the acid is equals to H+ (initial) - H+ (equilibrium) ≈ H+ (initial)

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