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O ACIDS AND BASESUnderstanding connections between descriptions of weak acid d...Jacwhen a 0.051 M aqueous solution of a certain acid is prepared, the acid is 2.7% dissociated. Calculate theanswer to 2 significant digits.acid dissociation constant K, ofthe acid. Round your

Question

Acids & Bases: Understanding Connections Between Descriptions of Weak Acid Dissociation

When a 0.051M aqueous solution of a certain acid is prepared, the acid is 2.7% dissociated. Calculate the acid dissociation constant Ka of the acid. Round your answer to 2 significant digits.

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O ACIDS AND BASES
Understanding connections between descriptions of weak acid d...
Jac
when a 0.051 M aqueous solution of a certain acid is prepared, the acid is 2.7% dissociated. Calculate the
answer to 2 significant digits.
acid dissociation constant K, of
the acid. Round your
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O ACIDS AND BASES Understanding connections between descriptions of weak acid d... Jac when a 0.051 M aqueous solution of a certain acid is prepared, the acid is 2.7% dissociated. Calculate the answer to 2 significant digits. acid dissociation constant K, of the acid. Round your

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check_circleAnswer
Step 1

The percent ionization constant of a weak acid is given as 2.7%. The initial molarity of the acid is 0.051 M.

Let the ionization of the acid be denoted as

The acid ionization constant is given as

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Step 2

Since the percent ionization and the initial concentrations are given, the concentration of proton, H+ at equilibrium can be easily calculated.

Due to the 1:1 nature of ionization, [A-] = 0.001377 M.

Since the acid HA has undergo dissociation, the equilibrium concentration of HA can be determined as

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Step 3

Plug in the values of [H+], [A-] and [HA] at equilibrium ...

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