Question 1

Which of the following orbital-filling diagrams represents the ground state of an oxygen atom?

Accepted Answer

First image

Question 2

A student sets up a titration experiment as shown in the fifth image. Which piece of equipment is used to accurately deliver variable volumes of titrant to the solution in the flask?

Accepted Answer

Buret

Question 3

In the electrochemical cell shown in the sixth image, which half-reaction occurs at the cathode?

Accepted Answer

$\mathrm{Ni^{2+} (aq) + 2e^- \rightarrow Ni (s)}$

Question 4

Based on the data in the seventh image, what is the order of the reaction with respect to Y?

Accepted Answer

Second order

Question 5

Refer to the reaction coordinate diagram in the eighth image. What does the distance labeled B represent?

Accepted Answer

Activation energy

Question 6

In the electrochemical cell shown, what is the direction of electron flow?

Accepted Answer

From the zinc electrode to the nickel electrode

Question 7

Which of the following best describes the function of the salt bridge in the electrochemical cell shown?

Accepted Answer

It maintains electrical neutrality by allowing ion flow between the two half-cells.

Question 8

In the titration setup shown, what is the primary purpose of the Erlenmeyer flask?

Accepted Answer

To contain the solution being titrated and allow mixing with the titrant.

Question 9

Given the rate data in the seventh image, what is the rate law for the reaction?

Accepted Answer

$\mathrm{rate = k[Y]^2[X]^1}$

Question 10

In the reaction coordinate diagram, what does the distance labeled D represent?

Accepted Answer

The overall energy change (ΔE) of the reaction

Question 11

Which of the following best describes the process occurring at the anode in the electrochemical cell shown?

Accepted Answer

Oxidation of zinc metal to zinc ions

Question 12

In the titration setup, which of the following errors would most likely lead to an inaccurate determination of the endpoint?

Accepted Answer

Not swirling the Erlenmeyer flask during titration

Introductory Chemistry Final Exam Study Guidance

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