Lab: Measuring pH Answers

Using logarithms, you determined the of 7 solutions ranging from strong acid to neutral to strong base.

You confirmed the pH values of the 7 sample solutions via the color of the pH indicator. You then used the known pH values to the cabbage pH indicator scale’s colors.

pink✔ bluegreen

red✔ purplegreen

✔ redpurplegreen

Which is the best reason for using an Erlenmeyer flask instead of another piece of glassware while filtering the cabbage solution?

Why would you use a solution, such as a cabbage pH indicator, to measure the pH of household items?

Owning a swimming pool requires making sure that the pH of the pool water is between 7.0 and 7.6, because it is the optimal pH for .

Scenario: You are testing two different household solutions with your cabbage indicator, using the color key to the right.One solution turns blue. A possible hydrogen ion concentration for this solution is:

Scenario: You are testing two different household solutions with your cabbage indicator, using the color key to the right.The second solution turns purple. A possible hydrogen ion concentration for this solution is:

Scenario: You are testing two different household solutions with your cabbage indicator, using the color key to the right.Using the results from the two previous questions:Solution One: 1 x 10 MSolution Two: 1 x 10 MThe hydrogen ion concentration of these two solutions differ from each other by a factor of .

How many acids are shown? How many bases are shown?

redblue✔ purple

Which factors might cause the pH of the water to change? Check all that apply.

red✔ bluegreen

pinkblue✔ green