pH

Question 1

To determine the pH of a solution using a pH indicator paper, you need a .

Revolt · Accepted Answer

color key

Question 2

Calibrating the cabbage pH indicator means based on

Revolt · Accepted Answer

creating a color key

Question 3

solutions that .

Revolt · Accepted Answer

have known pH values

Question 4

0.01 M HCl solution has a pH of 2. Suppose that during the experiment, both the universal pH indicator and the cabbage indicator turn orange-red for 0.01 M HCl. What can you conclude about the the cabbage indicator key?

Revolt · Accepted Answer

It matches the universal pH indicator and is indicating the proper pH.

Question 5

Which methods will help you properly identify pH with indicator paper? Check all that apply.

Revolt · Accepted Answer

Set a piece of pH paper in front of each solution before testing to keep organized.; Use a transfer pipet to remove a few drops from the solution to drop onto the paper.; Wait a minute or so before reading color.

Question 6

While transferring NaOH solution to the pH paper, you accidentally splash it onto your skin. Check all actions you should take.

Revolt · Accepted Answer

Tell your teacher right away.; Rinse the exposed skin with water.

Question 7

Concerning the disposal of materials at the end of the experiment, which methods are safe? Check all that apply.

Revolt · Accepted Answer

Dispose of pH paper in the trash.; Dump the cabbage indicator solution down the drain.; Ask your teacher to neutralize the acids and bases before disposal.

Question 8

You will use a filter funnel in this experiment to .

Revolt · Accepted Answer

separate cabbage from liquid

Question 9

Which statements describe proper use of a filter funnel? Check all that apply.

Revolt · Accepted Answer

Fold the filter paper in fourths before placing it in the funnel.; Pour all the liquid through the funnel.

pH Answers

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