Weak Acid and Base Equilibria

AP Chemistry· difficulty 3/5

For HA ⇌ H⁺ + A⁻, K_a =

A
$[A⁻]/[H⁺]$
B
$[H⁺][A⁻]/[HA]$
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C
$[HA]/([H⁺][A⁻])$
D
$[H⁺]/[A⁻]$

Explanation

Standard acid-dissociation constant expression.

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