Question 1

Which point on the phase diagram shown represents the triple point, where all three phases coexist?

Accepted Answer

Point A

Question 2

Given the Lewis structure for $$\mathrm{SO_4$^{2-}}$$, which of the following statements is correct regarding the formal charges on the oxygen atoms?

Accepted Answer

Two oxygen atoms have a formal charge of $$-1$$, and two have a formal charge of $$0$$

Question 3

Which of the following is the correct Lewis structure for $$\mathrm{SO_4$^{2-}}$$?

Accepted Answer

A structure with two double bonds and two single bonds between S and O, with appropriate lone pairs

Question 4

In the phase diagram provided, what does the line separating points A and B represent?

Accepted Answer

The boundary between liquid and gas phases

Question 5

Which of the following best describes the critical point on a phase diagram?

Accepted Answer

The temperature and pressure at which the liquid and gas phases become indistinguishable

Question 6

Given the following rate law: $$	ext{rate} = k[A]^2[B]$$, what is the overall order of the reaction?

Accepted Answer

Third order

Question 7

If the concentration of reactant A is doubled in a reaction with the rate law $$	ext{rate} = k[A]^2$$, how does the rate change?

Accepted Answer

It quadruples

Question 8

Which of the following integrated rate laws corresponds to a first-order reaction?

Accepted Answer

$$\ln [A] = \ln [A]_0 - kt$$

Question 9

Which of the following is true about the molecular geometry of $$\mathrm{SO_4$^{2-}}$$?

Accepted Answer

It is tetrahedral with bond angles of approximately $$109.5^\circ$$

Question 10

Which of the following best describes the process occurring at the boundary between the solid and gas regions on a phase diagram?

Accepted Answer

Sublimation

Question 11

For a reaction with the rate law $$	ext{rate} = k[A]$$, which plot will yield a straight line?

Accepted Answer

$$\ln [A] vs$$. $$t$$

Question 12

Which of the following is a correct statement about resonance structures in $$\mathrm{SO_4$^{2-}}$$?

Accepted Answer

Resonance structures differ only in the arrangement of electrons

Question 13

Which of the following is the correct expression for the half-life of a first-order reaction?

Accepted Answer

$$t_{1/2} = \frac{0.693}{k}$$

Question 14

Which of the following is true about the effect of temperature on reaction rate?

Accepted Answer

Increasing temperature increases the reaction rate

Question 15

Which of the following is the correct rate law for a reaction that is first order in A and zero order in B?

Accepted Answer

$$	ext{rate} = k[A]$$

Question 16

Which of the following is the correct relationship for a second-order reaction with respect to A?

Accepted Answer

$$\frac{1}{[A]} = \frac{1}{[A]_0} + kt$$

Question 17

Which of the following is true about the number of resonance structures for $$\mathrm{SO_4$^{2-}}$$?

Accepted Answer

There are four equivalent resonance structures

Question 18

Which process is represented by the transition from point C to point A on the phase diagram?

Accepted Answer

Melting

Question 19

Which of the following is the correct formula for calculating the rate constant $$k$$ for a first-order reaction given the half-life $$t_{1/2}$$?

Accepted Answer

$$k = \frac{0.693}{t_{1/2}}$$

General Chemistry 1411 Final Exam Study Guide: Key Concepts and Applications

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