We are asked to give an indicator that could narrow the pH range of the solution.
Recall that indicators are substances that changes color due to pH
• An indicator with a pH range of 3.2 to 4.4
• In an acidic solution, it gives a red colored solution while in a basic solution it is colored yellow
Addition of the indicator methyl orange to an unknown solution leads to a yellow color. The addition of bromthymol blue to the same solution also leads to a yellow color.
Is there another indicator you could use to narrow the range of possible pH values for the solution?
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Acid Base Indicators concept. If you need more Acid Base Indicators practice, you can also practice Acid Base Indicators practice problems.