Q: What is the net ionic equation for the reaction between aqueous solutions of Na$$_2CO$_3$$ and CaCl$$_2$$?

$$\text{Ca}^{2+} (aq) + \text{CO}_3$$^{2-}$$ (aq) \rightarrow \text{CaCO}_3 (s)$$

Q: Which of the following is a strong acid?

Hydrochloric acid, $$\text{HCl}$$

Q: Which of the following is the correct net ionic equation for the reaction between HCl(aq) and NaOH(aq)?

$$\text{H}^+ (aq) + \text{OH}^- (aq) \rightarrow \text{H}_2\text{O} (l)$$

Q: Which of the following reactions is a gas-evolution reaction?

$$\text{NaHCO}_3 (aq) + \text{HCl} (aq) \rightarrow \text{NaCl} (aq) + \text{CO}_2 (g) + \text{H}_2\text{O} (l)$$

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

$$M = \frac{\text{moles of solute}}{\text{liters of solution}}$$

Question 1

Which of the following best describes a solution?

Accepted Answer

A homogeneous mixture of two or more substances

Question 2

What is the molarity of a solution prepared by dissolving 19.5 g of CuSO$$_4 in $$enough water to make 1.55 L of solution? (Molar mass of CuSO$$_4 = 159.6 g/$$mol)

Accepted Answer

$$0.0790\ 	ext{M}$$

Question 3

Which of the following statements about electrolytes is correct?

Accepted Answer

A strong electrolyte dissociates completely into ions in water

Question 4

A student needs to prepare 100.0 mL of 0.500 M NH$$_3$$ from a 14.8 M stock solution. What volume of the stock solution should be used?

Accepted Answer

$$3.38\ 	ext{mL}$$

Question 5

Which of the following compounds will form a precipitate when mixed with a solution of AgNO$$_3$$?

Accepted Answer

NaCl

Question 6

What is the net ionic equation for the reaction between aqueous solutions of Na$$_2CO$_3$$ and CaCl$$_2$$?

Accepted Answer

$$	ext{Ca}^{2+} (aq) + 	ext{CO}_3$$^{2-}$$ (aq) ightarrow 	ext{CaCO}_3 (s)$$

Question 7

Which of the following is a strong acid?

Accepted Answer

Hydrochloric acid, $$	ext{HCl}$$

Question 8

How many milliliters of 0.2497 M H$$_2SO$_4$$ are needed to neutralize 15.00 mL of 0.3501 M KOH? (Reaction: $$2	ext{KOH} + 	ext{H}_2	ext{SO}_4 ightarrow 	ext{K}_2	ext{SO}_4 + 2	ext{H}_2	ext{O})$$

Accepted Answer

$$10.52\ 	ext{mL}$$

Question 9

Which of the following best explains why NaCl is a strong electrolyte?

Accepted Answer

NaCl dissociates completely into Na$$^+$$ and Cl$$^-$$ ions in water

Question 10

A solution is prepared by dissolving 0.3502 g of KMnO$$_4 in $$enough water to make 50.0 mL of solution. What is the molarity of the solution? (Molar mass of KMnO$$_4 = 158.0 g/$$mol)

Accepted Answer

$$0.0443\ 	ext{M}$$

Question 11

Which of the following is the correct net ionic equation for the reaction between HCl(aq) and NaOH(aq)?

Accepted Answer

$$	ext{H}^+ (aq) + 	ext{OH}^- (aq) ightarrow 	ext{H}_2	ext{O} (l)$$

Question 12

Which of the following pairs will NOT form a precipitate when mixed?

Accepted Answer

KI(aq) and NaCl(aq)

Question 13

Which of the following is a correct statement about the solubility rules?

Accepted Answer

All compounds containing Na$$^+$$ are soluble

Question 14

Which of the following reactions is a gas-evolution reaction?

Accepted Answer

$$	ext{NaHCO}_3 (aq) + 	ext{HCl} (aq) ightarrow 	ext{NaCl} (aq) + 	ext{CO}_2 (g) + 	ext{H}_2	ext{O} (l)$$

Question 15

A 50.00 mL sample of 0.0526 M HNO$$_3 is $$titrated with 0.0844 M Ba(OH)$$_2. $$What volume of Ba(OH)$$_2 is $$required to reach the equivalence point? (Reaction: $$2	ext{HNO}_3 + 	ext{Ba(OH)}_2 ightarrow 	ext{Ba(NO}_3)_2 + 2	ext{H}_2	ext{O})$$

Accepted Answer

$$15.6\ 	ext{mL}$$

Question 16

Which of the following best describes the process of dilution?

Accepted Answer

Adding solvent to decrease the concentration while keeping the moles of solute constant

Question 17

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

Accepted Answer

$$M = \frac{	ext{moles of solute}}{	ext{liters of solution}}$$

Question 18

Which of the following is a weak electrolyte?

Accepted Answer

NH$$_3$$

Introduction to Solutions and Aqueous Reactions – Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard