Question

The pH of a bicarbonate-carbonic acid buffer is 5.96. Calculate the ratio of the concentration of carbonic acid ($H_2CO_3$) to that of the bicarbonate ion ($HCO_3^-$). Be sure your answer has the correct number of significant digits. Note: Reference the $pK_a$ of weak acids at 25 °C table for additional information. $\frac{[H_2CO_3]}{[HCO_3^-]}$

Name: the ph of a bicarbonate carbonic acid buffer is 596 calculate the ratio of the concentration of carbonic acid h2co3 to that of the bicarbonate ion hco3 be sure your answer has the correct 46021
Uploaded: 2023-03-11T05:05:42-08:00
Duration: 2 min 29 s
Channel: Narayan Hari
Description: the ph of a bicarbonate carbonic acid buffer is 596 calculate the ratio of the concentration of carbonic acid h2co3 to that of the bicarbonate ion hco3 be sure your answer has the correct 46021

          The pH of a bicarbonate-carbonic acid buffer is 5.96. Calculate the ratio of the concentration of carbonic acid ($H_2CO_3$) to that of the bicarbonate ion ($HCO_3^-$). Be sure your answer has the correct number of significant digits.
Note: Reference the $pK_a$ of weak acids at 25 °C table for additional information.
$\frac{[H_2CO_3]}{[HCO_3^-]}$

the ph of a bicarbonate carbonic acid buffer is 596 calculate the ratio of the concentration of carbonic acid h2co3 to that of the bicarbonate ion hco3 be sure your answer has the correct 46021

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Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

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Solved by Expert Narayan Hari

03/11/2023

Step 1

In this case, the weak acid is $H_2CO_3$ and the conjugate base is $HCO_3^-$. Therefore, we have: $pH = pK_a + log \frac{[HCO_3^-]}{[H_2CO_3]}$ We are given that the pH is 5.96. From a table of $pK_a$ values for weak acids at 25°C, we find that the $pK_a$ for Show more…

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The pH of a bicarbonate-carbonic acid buffer is 5.96. Calculate the ratio of the concentration of carbonic acid ($H_2CO_3$) to that of the bicarbonate ion ($HCO_3^-$). Be sure your answer has the correct number of significant digits. Note: Reference the $pK_a$ of weak acids at 25 °C table for additional information. $\frac{[H_2CO_3]}{[HCO_3^-]}$