Question

The pKa of carbonic acid is 6.35. A solution is made by combining 50 mL 1.0 M carbonic acid, 2.0 mL 5.0 M KOH and 448 mL pure water (assume the total volume is 500 mL). Calculate the pH of the resulting solution.

Name: the pka of carbonic acid is 635 a solution is made by combining 50 ml 10 m carbonic acid 20 ml 50 m koh and 448 ml pure water assume the total volume is 500 ml calculate the ph of the result 40206
Uploaded: 2022-03-21T08:30:40-08:00
Duration: 2 min 14 s
Channel: Krishna G
Description: the pka of carbonic acid is 635 a solution is made by combining 50 ml 10 m carbonic acid 20 ml 50 m koh and 448 ml pure water assume the total volume is 500 ml calculate the ph of the result 40206

          The pKa of carbonic acid is 6.35.  A solution is
made by combining 50 mL 1.0 M carbonic acid, 2.0 mL 5.0 M KOH and
448 mL pure water (assume the total volume is 500 mL). 
Calculate the pH of the resulting solution.

Added by Adam P.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Krishna G

03/21/2022

Step 1

For carbonic acid: \[ \text{Moles of H}_2\text{CO}_3 = \text{Volume (L)} \times \text{Concentration (M)} \] \[ \text{Moles of H}_2\text{CO}_3 = 0.050 \, \text{L} \times 1.0 \, \text{M} = 0.050 \, \text{moles} \] For potassium hydroxide: \[ \text{Moles of KOH} = Show more…

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The pKa of carbonic acid is 6.35. A solution is made by combining 50 mL 1.0 M carbonic acid, 2.0 mL 5.0 M KOH and 448 mL pure water (assume the total volume is 500 mL). Calculate the pH of the resulting solution.