Chemistry Practice Problems Acid Base Indicators Practice Problems Solution: The beaker on the right contains 0.1 M acetic acid...

Solution: The beaker on the right contains 0.1 M acetic acid solution with methyl orange as an indicator. The beaker on the left contains a mixture of 0.1 M acetic acid and 0.1 M sodium acetate with methyl orange.Using the given figure, which solution has a higher pH?

Problem

The beaker on the right contains 0.1 M acetic acid solution with methyl orange as an indicator. The beaker on the left contains a mixture of 0.1 M acetic acid and 0.1 M sodium acetate with methyl orange.
The left beaker contains a yellow solution and the right beaker contains a purple/pink solution.

Using the given figure, which solution has a higher pH?

Solution

We have to determine which of the given solutions has a higher pH by looking at the given figure.


pH indicators are substances which exhibit a color change with the change in pH.

Methyl orange is an indicator which shows a change in color from red to yellow withing the pH range of 3.2 to 4.4.

This can be better explained in this table:

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