You will need about 35 mL of each of these solutions so that you can use all five indicators one at a time with7 mL of each substance.
To determine pH values,first pour 7 mL of the solution into each of five clean test tubes.
Add 2 drops (more if needed)of each of the indicators,one indicator to each test tube,and
stir.Note and record the color of each solution and compare it with the corresponding set
of reference indicator solutions, paying particularattention to the color at the transition point. You should be able to see ,in each case,whether the pH of your solution is aboue,below or at the transition pH. By combining this information for all five indicators, each of which has a different transition point, you should be able to determine the approximate pH of each substance tested. In most cases,one of the indicators will prove to be more useful than the others (the pH will be at or near the transition point.)
AS an example,the colors for the first substance (carbonated beverage) are already indicated on the answer sheet.Note that the colors listed for the various indicators all agree with pH 5 in the table you made for part 1.