Question 1

When the equation $$\mathrm{N_2$ + H_2$ \rightarrow NH_3$} is $$balanced, what are the coefficients for $$\mathrm{N_2$}$$, $$\mathrm{H_2$}$$, and $$\mathrm{NH_3$}$$ respectively?

Accepted Answer

1, 3, 2

Question 2

Balance the following chemical equation: $$\_\mathrm{CH_4$} + \_\mathrm{O_2$} \rightarrow \_\mathrm{CO_2$} + \_\mathrm{H_2O}. $$Which set of coefficients correctly balances the equation?

Accepted Answer

1, 2, 1, 2

Question 3

Which statement best describes a solution?

Accepted Answer

A homogeneous mixture of two or more substances

Question 4

In a solution made by dissolving 20 grams of sugar in 100 grams of water, which is the solute and which is the solvent?

Accepted Answer

Water is the solvent and sugar is the solute

Question 5

What is the process called when an ionic solid dissolves and each ion is surrounded by solvent molecules?

Accepted Answer

Solvation

Question 6

Which of the following compounds would form a non-electrolyte solution when dissolved in water?

Accepted Answer

SO$$_2$$

Question 7

Which property is NOT characteristic of a solution?

Accepted Answer

Contains visible particles

Question 8

What is the molarity of a solution containing 5.0 mol NaOH in 2.0 L of solution?

Accepted Answer

$$2.5\ \mathrm{M}$$

Question 9

A student prepares 200 mL of solution containing 0.30 mol HCl. What is the molarity of the solution?

Accepted Answer

$$1.5\ \mathrm{M}$$

Question 10

What is the concentration of a solution that contains 4.50 mol of NaF dissolved in 7.50 L of solution?

Accepted Answer

$$0.600\ \mathrm{M}$$

Question 11

How many moles of NH$$_3$$ are present in 1.50 L of a 0.500 M NH$$_3$$ solution?

Accepted Answer

$$0.750\ \mathrm{mol}$$

Question 12

Calculate the number of moles in 500 mL of 0.400 M HCl.

Accepted Answer

$$0.200\ \mathrm{mol}$$

Question 13

Which of the following best describes an electrolyte?

Accepted Answer

A substance that conducts electricity when dissolved in water

Question 14

Which equation correctly relates molarity, moles of solute, and volume of solution?

Accepted Answer

$$M = \frac{\mathrm{mol\ solute}}{\mathrm{L\ solution}}$$

Question 15

A hospital IV bag contains 0.90 mol NaCl dissolved in 1.50 L of water. What is the molarity of the solution?

Accepted Answer

$$0.60\ \mathrm{M}$$

Question 16

Which of the following is a property of a non-electrolyte solution?

Accepted Answer

Does not conduct electricity

Question 17

A solution is made by dissolving 0.25 mol of glucose in enough water to make 0.50 L of solution. What is the molarity?

Accepted Answer

$$0.50\ \mathrm{M}$$

Question 18

Which of the following best explains why covalent compounds like sugar do not conduct electricity in water?

Accepted Answer

They do not dissociate into ions

Question 19

A chemist needs to prepare 1.0 L of 0.250 M NaCl solution. How many moles of NaCl are required?

Accepted Answer

$$0.250\ \mathrm{mol}$$

Question 20

Which of the following is true about aqueous solutions?

Accepted Answer

Water is the solvent

Chapter 9: Solutions – General Chemistry Study Notes

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