Question 1

Which of the following best describes the process illustrated in the first image, where a solution from a buret is added to a flask containing another solution until the equivalence point is reached?

Accepted Answer

Acid-base titration

Question 2

In the titration setup shown in the second image, what is the primary purpose of the electrode placed in the beaker?

Accepted Answer

To measure the pH of the solution during titration

Question 3

During an acid-base titration, as shown in the first image, what is the chemical equation that represents the neutralization reaction occurring at the equivalence point?

Accepted Answer

$$\mathrm{H^+(aq) + OH^-(aq) \rightarrow H_2O(l)}$$

Question 4

In the titration process depicted, what is the significance of reaching the equivalence point?

Accepted Answer

The number of moles of acid equals the number of moles of base

Question 5

A student is performing a titration using the setup in the second image. If the titrant is a strong base and the analyte is a strong acid, what is the expected pH at the equivalence point?

Accepted Answer

$$\mathrm{pH = 7}$$

Question 6

In the first image, what would happen if the titration is continued past the equivalence point?

Accepted Answer

The solution would become more basic

Question 7

Which piece of equipment in the second image is used to ensure the solution is well mixed during the titration?

Accepted Answer

The magnetic stirrer/hot plate

Question 8

If a student uses the setup in the second image to titrate 50.00 mL of 0.10 M HCl with 0.10 M NaOH, what volume of NaOH is required to reach the equivalence point?

Accepted Answer

$$\mathrm{50.00\ mL}$$

Question 9

During a titration, why is it important to add the titrant slowly as the equivalence point is approached?

Accepted Answer

To avoid overshooting the equivalence point and ensure accurate results

Question 10

In the context of the first image, what is the role of the indicator in an acid-base titration?

Accepted Answer

To signal the endpoint by changing color near the equivalence point

Question 11

If the titration in the first image is performed with a weak acid and a strong base, what will be the pH at the equivalence point?

Accepted Answer

Greater than 7

Question 12

What is the main difference between the equivalence point and the endpoint in a titration, as illustrated in the images and described in the study materials?

Accepted Answer

The equivalence point is the theoretical completion of the reaction, while the endpoint is the observed color change

Aqueous Ionic Equilibria: Buffers and Acid-Base Titrations

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