Question 1

Which of the following best describes the process of solution formation?

Accepted Answer

It involves breaking and forming intermolecular forces, and can be either endothermic or exothermic depending on the substances involved.

Question 2

A solution is prepared by dissolving 10.0 g of NaCl in 100.0 g of water. What is the vapor pressure lowering if the vapor pressure of pure water at this temperature is 23.8 mmHg? (Assume ideal behavior and use $$P_{solution} = X_{solvent} 	imes P^0$_{solvent})$$

Accepted Answer

$$\Delta P = 1.36$$ mmHg

Question 3

Which equation correctly represents the relationship between boiling point elevation and molality?

Accepted Answer

$$\Delta T_b = K_b \cdot m$$

Question 4

Which of the following statements about colligative properties is correct?

Accepted Answer

They depend only on the number of solute particles present.

Question 5

A reaction has $$\Delta H = -100 kJ $$and $$\Delta S = -200 J/K. At $$what temperature does the reaction become non-spontaneous? (Use $$\Delta G = \Delta H - T\Delta S)$$

Accepted Answer

$$T = 500 K$$

Question 6

Which law describes the relationship between the partial pressure of a volatile component and its mole fraction in a solution?

Accepted Answer

Raoult's Law: $$P_A = X_A \cdot P^0$_A$$

Question 7

Which of the following is a correct statement about the second law of thermodynamics?

Accepted Answer

The entropy of the universe increases in a spontaneous process.

Question 8

Which formula is used to calculate the equilibrium constant $$K_c$$ for the reaction $$aA + bB \rightleftharpoons cC + dD$$?

Accepted Answer

$$K_c = \frac{[C]^c [D]^d}{[A]^a [B]^b}$$

Question 9

A buffer solution is made by mixing 0.10 mol of acetic acid and 0.10 mol of sodium acetate in 1.0 L of water. What is the pH of the solution if $$pK_a of $$acetic acid is 4.76? (Use $$pH = pK_a + \log \frac{[A^-]}{[HA]})$$

Accepted Answer

pH = 4.76

Question 10

Which of the following best explains why adding salt to ice causes it to melt?

Accepted Answer

Salt lowers the freezing point of water, causing the ice to melt at a lower temperature.

Question 11

Which of the following is true about the relationship between $$K_p$$ and $$K_c$$ for a gaseous reaction?

Accepted Answer

$$K_p = K_c \cdot (RT$$)^{\Delta n}$$

Question 12

Which of the following reactions is an example of a redox reaction?

Accepted Answer

$$2H_2 + O_2$ \rightarrow 2H_2O$$

Question 13

Which equation is used to calculate the pH of a weak acid solution?

Accepted Answer

$$pH = -\log [H^+]$$

Question 14

Which of the following statements about polymers is correct?

Accepted Answer

Polymers are formed by the repeated addition of monomers.

Question 15

Which of the following is the correct expression for the solubility product constant ($$K_{sp}) of$$ $$CaF_2$$?

Accepted Answer

$$K_{sp} = [Ca$$^{2+}$$][F^-]^2$$

Question 16

Which of the following best describes the function of a catalyst in a chemical reaction?

Accepted Answer

It lowers the activation energy, increasing the rate of reaction.

Question 17

Which of the following is a correct statement about acids and bases according to the Brønsted-Lowry theory?

Accepted Answer

An acid is a substance that donates a proton ($$H^+).$$

Question 18

Which of the following is the correct formula for calculating the entropy change ($$\Delta S) $$for a reversible process?

Accepted Answer

$$\Delta S = \frac{q_{rev}}{T}$$

Question 19

Which of the following is true about the effect of temperature on the equilibrium constant $$K$$ for an exothermic reaction?

Accepted Answer

Increasing temperature decreases $$K.$$

Honors General Chemistry 2 Syllabus and Course Outline

Study Guide - Practice Questions

Study Guide - Flashcards