Question 1

Which of the following best describes a limiting reactant in a chemical reaction?

Accepted Answer

The reactant that determines the maximum amount of product that can be formed.

Question 2

A student mixes 0.50 mol of NaCl with 0.30 mol of AgNO$$_3 in $$water. What is the maximum amount of AgCl (in moles) that can be formed? (AgNO$$_3 + $$NaCl → AgCl + NaNO$$_3)$$

Accepted Answer

$$0.30$$ mol

Question 3

Which of the following is the correct balanced chemical equation for the combustion of methane (CH$$_4$$)?

Accepted Answer

$$\mathrm{CH_4$ + 2O_2 \rightarrow CO_2$ + 2H_2O}$$

Question 4

A solution is prepared by dissolving 0.25 mol of KBr in enough water to make 500 mL of solution. What is the molarity of the solution?

Accepted Answer

$$0.20\ \mathrm{M}$$

Question 5

Which of the following compounds is a strong electrolyte when dissolved in water?

Accepted Answer

Sodium chloride ($$\mathrm{NaCl})$$

Question 6

Which of the following best describes a precipitation reaction?

Accepted Answer

A reaction in which an insoluble solid forms from the mixing of two solutions.

Question 7

Which of the following is the correct net ionic equation for the reaction between aqueous solutions of Na$$_2SO$_4$$ and BaCl$$_2$$?

Accepted Answer

$$\mathrm{Ba$$^{2+}$$ (aq) + SO_4$^{2-} (aq) \rightarrow $$BaSO_4$$ (s)}$$

Question 8

A 1.0 L solution contains 0.10 mol of HCl. What is the pH of the solution?

Accepted Answer

$$1.0$$

Question 9

Which of the following statements about diprotic acids is correct?

Accepted Answer

They can donate two protons per molecule in two steps.

Question 10

Which of the following is the correct oxidation half-reaction for the combustion of carbon?

Accepted Answer

Question 11

A sample of gas at 1.00 atm and 273 K occupies 22.4 L. Which law is being demonstrated?

Accepted Answer

Avogadro's Law

Question 12

If the pressure of a gas is doubled at constant temperature, what happens to its volume according to Boyle's Law?

Accepted Answer

The volume is halved.

Question 13

Which equation represents the ideal gas law?

Accepted Answer

$$PV = nRT$$

Question 14

A mixture contains 2.0 mol of O$$_2$$ and 3.0 mol of N$$_2. $$What is the mole fraction of O$$_2$$?

Accepted Answer

$$0.40$$

Question 15

Which of the following statements is true according to the kinetic molecular theory of gases?

Accepted Answer

Gas particles move in random, straight-line motion.

Question 16

Which of the following gases will diffuse fastest under identical conditions?

Accepted Answer

H$$_2$$

Question 17

Which term describes the average distance a gas molecule travels between collisions?

Accepted Answer

Mean free path

Question 18

Which component of the van der Waals equation accounts for the finite volume of gas particles?

Accepted Answer

$$b$$

Question 19

A real gas deviates from ideal behavior at high pressure because:

Accepted Answer

Intermolecular forces become significant.

General Chemistry Study Guide: Chemical Reactions, Stoichiometry, Solutions, and Gases

Guida di studio - Domande di pratica

Study guide - Flashcard