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A 0.1M weak acid HA after teratment with...

A 0.1M weak acid HA after teratment with 12 mL of `0.1M` strong base BOH has a pH of 5. At the end point, the volume of same base required is `27mL.K_(a)` of acid is:

A

`1.8xx10^(-5)`

B

`8xx10^(-6)`

C

`1.8xx10^(-8)`

D

`8xx10^(-5)`

Text Solution

AI Generated Solution

To solve the problem, we need to find the \( K_a \) of the weak acid \( HA \) after it has reacted with a strong base \( BOH \). Here’s a step-by-step breakdown of how to approach this: ### Step 1: Calculate the moles of the strong base \( BOH \) Given: - Concentration of \( BOH = 0.1 \, M \) - Volume of \( BOH = 12 \, mL = 0.012 \, L \) Using the formula: ...
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