Problem 91
What is a pH color-change range for an indicator? How is it useful for determining pH between the range of \(\mathrm{pH}\) values?
Problem 92
How can an indicator have two color-change ranges? What characteristic must be present?
Problem 95
Predict the color of the methyl orange indicator in a solution that has a \(\mathrm{pH}\) of \(3.5\).
Problem 96
Predict the color of the thymol blue indicator in a solution that has a \(\mathrm{pH}\) of \(8.8\).
Problem 97
What can we say about the \(\mathrm{pH}\) of a solution that is red when the indicator thymol blue is added? When the solution is yellow? When the solution is blue?
Problem 98
What can we say about the \(\mathrm{pH}\) of a solution that is colorless when phenolphthalein is added? When the solution is dark pink?
Problem 99
What is a universal indicator? How are universal indicator and \(\mathrm{pH}\) paper similar?
Problem 100
How is litmus paper different from \(\mathrm{pH}\) paper?
Problem 101
What would you expect to observe if you ran a titration of an acid at a \(\mathrm{pH}\) of \(1.0\) by adding base and using bromocresol green as an indicator?
Problem 102
What would you expect to observe if you ran a titration of a base at a \(\mathrm{pH}\) of \(11.0\) by adding acid and using methyl red as an indicator?
