Lab: Measuring pH Answers

Using logarithms, you determined the solubilitytemperatures✔ pH 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 eliminatetest✔ calibrate

pinkblue✔ green

pink✔ bluegreen

red✔ purplegreen

✔ redpurplegreen

The photo on the right shows 12 solutions with cabbage indicator added. Answer these questions based on your cabbage indicator chart and the colors shown.In which order are the solutions arranged, from left to right? ✔ acid-neutral-basebase-neutral-acidacid-base-neutralneutral-base-acidno particular order

How many acids are shown? ⇒ 4

What range seems to be missing? 1–23–4✔ 5–6X 78–910–1112–13

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

A cabbage p H indicator color key. Entries are 0 to 2, bright red; 3 to 4, pink; 5 to 6, purple; 7, dark violet; 8 to 9, blue; 10 to 11, bright green; 12 to 13, lighter green. Why would you use a solution, such as a cabbage pH indicator, to measure the pH of household items?

Identify the approximate color you would expect if you were to test each household item using a cabbage pH indicator.

Identify the approximate color you would expect if you were to test each household item using a cabbage pH indicator.

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 algae growth✔ swimmers’ healthbacteria to grow.

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

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 1✔ 10X 100.

How many bases are shown? ⇒ 7