The reversible reaction for the pH indicator bromophenol blue is (C 19 H 8 Br 4 O 5 S)H –↔ (C 19 H 8 Br 4 O 5 S) 2–+ H + . Write the equilibrium expression for this reaction.

What direction do you predict the addition of an acid to the solution containing bromophenol blue will drive the equilibrium? Explain your prediction in terms of Le Châtelier's principle. Hint: Think about what the addition of an acid does to the concentration of H +ions.

Bromophenol blue is an indicator with a pKin of 3.9. The acid form is yellow, and the base form is blue. What colour will a solution of bromophenol blue be at pH 4.07?

Bromothymol blue is an indicator that turns yellow in solutions when the pH is below 6, green when the pH is between 6 and 8, and blue when the pH is above 8. What color would it turn when added to water?Question 4Select one:a.pinkb.yellowc.greend.blue

Bromothymol Blue is one of the indicators we will be using in next week's experiment.  What pH range does Bromothymol Blue change colour?

The pH indicator bromothymol blue is blue in an alkaline solution and yellow in an acidic solution. A slight increase in acidity, such as when CO2 gas is added, causes a solution with the indicator to change from blue to yellow.A solution with the indicator would turn from blue to yellow when which combination of factors exists? Select the two correct answers.A.Algae in the solution are placed under a bright light.B.A water plant in the solution is placed on a sunny windowsill.C.A person blows air into the solution through a straw.D.Yeast cells and sugar are placed in the solution.