Writing and Balancing Chemical Equations

Question 1

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

Revolt · Accepted Answer

A: color key

Question 2

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

Revolt · Accepted Answer

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

Question 3

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

Revolt · Accepted Answer

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

Question 4

Calibrating the cabbage pH indicator means based on

Revolt · Accepted Answer

B: creating a color key

Question 5

You will use a filter funnel in this experiment to .

Revolt · Accepted Answer

D: separate cabbage from liquid

Question 6

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

Revolt · Accepted Answer

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

Question 7

solutions that .

Revolt · Accepted Answer

D: have known pH values

Question 8

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

Revolt · Accepted Answer

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

Question 9

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

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

Writing and Balancing Chemical Equations Answers

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