Q: A student mixes solutions of Na2SO4 and Ba(OH)2. Which of the following is the correct net ionic equation for the reaction that occurs?

$$\text{Ba}^{2+}(aq) + \text{SO}_4$$^{2-}$$(aq) \rightarrow \text{BaSO}_4(s)$$

Q: Which of the following is a correct balanced molecular equation for the neutralization of sulfuric acid with sodium hydroxide?

$$\text{H}_2\text{SO}_4(aq) + 2\text{NaOH}(aq) \rightarrow \text{Na}_2\text{SO}_4(aq) + 2\text{H}_2\text{O}(l)$$

Q: Which of the following is the correct net ionic equation for the reaction between lead(II) acetate and calcium chloride in aqueous solution?

$$\text{Pb}^{2+}(aq) + 2\text{Cl}^-(aq) \rightarrow \text{PbCl}_2(s)$$

Q: Which of the following reactions is a redox reaction?

$$\text{Zn}(s) + \text{Cu}^{2+}(aq) \rightarrow \text{Zn}^{2+}(aq) + \text{Cu}(s)$$

Q: Which of the following is the correct formula for calculating the molarity (M) of a solution?

$$M = \frac{\text{moles of solute}}{\text{volume of solution (L)}}$$

Question 1

Which of the following statements best describes a strong electrolyte in aqueous solution?

Accepted Answer

It completely dissociates into ions in water, resulting in a solution that conducts electricity well.

Question 2

A student mixes solutions of Na2SO4 and Ba(OH)2. Which of the following is the correct net ionic equation for the reaction that occurs?

Accepted Answer

$$	ext{Ba}^{2+}(aq) + 	ext{SO}_4$$^{2-}$$(aq) ightarrow 	ext{BaSO}_4(s)$$

Question 3

Which compound is insoluble in water according to the solubility guidelines?

Accepted Answer

CaSO4

Question 4

Which of the following is a correct balanced molecular equation for the neutralization of sulfuric acid with sodium hydroxide?

Accepted Answer

$$	ext{H}_2	ext{SO}_4(aq) + 2	ext{NaOH}(aq) ightarrow 	ext{Na}_2	ext{SO}_4(aq) + 2	ext{H}_2	ext{O}(l)$$

Question 5

A solution is prepared by dissolving 50.0 g of glucose ($$	ext{C}_6	ext{H}_{12}	ext{O}_6$$, molar mass = 180.2 g/mol) in enough water to make 2.00 L of solution. What is the molarity of the solution?

Accepted Answer

$$0.139\ 	ext{M}$$

Question 6

Which of the following is the correct net ionic equation for the reaction between lead(II) acetate and calcium chloride in aqueous solution?

Accepted Answer

$$	ext{Pb}^{2+}(aq) + 2	ext{Cl}^-(aq) ightarrow 	ext{PbCl}_2(s)$$

Question 7

Which of the following acids is NOT a strong acid?

Accepted Answer

HF

Question 8

A 0.451 M solution of Ca(NO3)2 is prepared. What is the concentration of nitrate ions in the solution?

Accepted Answer

$$0.902\ 	ext{M}$$

Question 9

Which of the following best describes the role of water in the dissolution of ionic compounds?

Accepted Answer

Water molecules surround and separate the ions due to their polarity, a process called hydration.

Question 10

Which of the following reactions is a redox reaction?

Accepted Answer

$$	ext{Zn}(s) + 	ext{Cu}^{2+}(aq) ightarrow 	ext{Zn}^{2+}(aq) + 	ext{Cu}(s)$$

Question 11

What is the pH of a solution at 25°C in which $$[	ext{H}_3	ext{O}^+] = 3.5 	imes 10$$^{-4}$$\ 	ext{M}$$?

Accepted Answer

3.46

Question 12

A 0.1216-g sample of a monoprotic acid is titrated with 0.1104 M NaOH. If 12.5 mL of base is required to reach the endpoint, what is the molar mass of the acid?

Accepted Answer

88.1 g/mol

Question 13

Which of the following metals will be oxidized by $$	ext{Cu}^{2+}(aq)$$ according to the activity series?

Accepted Answer

Zn(s)

Question 14

Which of the following is the correct formula for calculating the molarity (M) of a solution?

Accepted Answer

$$M = \frac{	ext{moles of solute}}{	ext{volume of solution (L)}}$$

Question 15

A student needs to prepare 250.0 mL of 0.125 M HCl from a 12.0 M stock solution. What volume of the stock solution should be used?

Accepted Answer

2.60 mL

Question 16

Which of the following best describes a Brønsted-Lowry acid?

Accepted Answer

A substance that donates a proton (H+) to another substance.

Question 17

In gravimetric analysis, a 0.8633-g sample containing chloride ions yields 1.5615 g of AgCl upon reaction with excess AgNO3. What is the percent by mass of Cl in the original sample? (Molar mass of AgCl = 143.3 g/mol, Cl = 35.45 g/mol)

Accepted Answer

44.71%

Question 18

Which of the following is the correct oxidation number for sulfur in $$	ext{H}_2	ext{SO}_4$$?

Accepted Answer

+6

Chemical Reactions in Aqueous Solutions: General Chemistry Study Notes

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드