Question
What is the hydronium-ion concentration of a $3.00 \times$ $10^{-4} M$ solution of $p$ -bromobenzoic acid, $\mathrm{BrC}_{6} \mathrm{H}_{4} \mathrm{COOH},$ for which $K_{a}=1.00 \times 10^{-4} ?$
Step 1
The reaction is as follows: \[ \mathrm{BrC}_{6} \mathrm{H}_{4} \mathrm{COOH} + \mathrm{H}_{2}\mathrm{O} \rightleftharpoons \mathrm{H}_{3}\mathrm{O}^{+} + \mathrm{BrC}_{6} \mathrm{H}_{4} \mathrm{COO}^{-} \] The initial concentrations are $3.00 \times 10^{-4} M$ for Show more…
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