For these start with a high pH solution,0.01M sodium hydroxide,NaOH,solution with 9mL of the boiled water to make the pH 11 solution.Stir.Similarly prepare solutions of pH10,pH9,and pH8 by progressive tenfold dilutions,just as you did in part 1A
Obtai your assigneed indicator (in solution form )from your instructor and add 2drops of it to each of your prepared solutions and stir.If the color is not distinct,continue to
add indicator 2drops at a time to all test tubes. Stir. Label your set,showing the indicator and the number of drops of indicator per test tube. Set it in the designated place in the room. Test tubes need not be stoppered unless they are to be left for use days later.