Lab: Acids and Bases

Question 1

The independent variable, the one that is intentionally manipulated, is [___].

Revolt · Accepted Answer

C: the system for measurement

Question 2

What type of solution is represented by the beaker? [___]

Revolt · Accepted Answer

C: acidic

Question 3

A solution with a pH = 13 has approximately how many moles of OH– ions per liter? [___]

Revolt · Accepted Answer

0.1

Question 4

Which color represents the most basic solution? [___]

Revolt · Accepted Answer

C: green (right)

Question 5

According to the chart, which is the strongest acid, based on its pH level? [___]

Revolt · Accepted Answer

C: gastric acid

Question 6

If the pH of Beaker #1 is 2, then what would the best prediction for the pH of Beaker #2 be? [___]

Revolt · Accepted Answer

C: 3

Question 7

Which could be sources of error in the lab? Check all that apply.measurement of volumes when making the serial dilutionsapproximating the pH based on matching colors between pH papersmiscalculation of pH values using the reference tablesnot boiling the cabbage long enough or hot enough to make the indicator solutionusing distilled water to make your dilutions instead of sea water

Revolt · Accepted Answer

A: measurement of volumes when making the serial dilutions; B: approximating the pH based on matching colors between pH papers; C: miscalculation of pH values using the reference tables; D: not boiling the cabbage long enough or hot enough to make the indicator solution

Question 8

The dependent variable, the one that you measure the response in, is [___].

Revolt · Accepted Answer

A: the pH of the solution

Question 9

Which would be a good estimate of the solution’s pH? [___]

Revolt · Accepted Answer

B: pH = 8

Question 10

How many moles of H+ would this same solution have per liter? [___]

Revolt · Accepted Answer

0.0000000000001

Lab: Acids and Bases Answers

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