Problem: A 25.0-mL sample of 0.125 M pyridine is titrated with 0.100 MHCl. Calculate the pH at 40 mL of added acid. Express your answer using two decimal places.

FREE Expert Solution

We are given being asked to determine the pH of a 25.0-mL sample of 0.125 M pyridine titrated with 40mL of 0.100 M HCl.


Pyridine is a weak base and HCl is a strong acid. So, this is a weak base-strong acid titration


We are going to perform the following step:

Step 1: Determine initial concentrations

Step 2: Construct ICE Chart

Step 3: Determine [H+]

Step 4: Calculate pH


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Problem Details

A 25.0-mL sample of 0.125 M pyridine is titrated with 0.100 MHCl. Calculate the pH at 40 mL of added acid. Express your answer using two decimal places.

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Our tutors have indicated that to solve this problem you will need to apply the Weak Base Strong Acid Titrations concept. You can view video lessons to learn Weak Base Strong Acid Titrations. Or if you need more Weak Base Strong Acid Titrations practice, you can also practice Weak Base Strong Acid Titrations practice problems.