Question 1

Which of the following is the correct name for the compound $$\mathrm{$$FeCl_3$$}$$?

Accepted Answer

Iron(III) chloride

Question 2

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

Accepted Answer

$$\mathrm{NaCl}$$

Question 3

A solution is prepared by dissolving $$0.50$$ mol of $$\mathrm{$$KNO_3$$} in $$enough water to make $$1.0 L of $$solution. What is the molarity of the solution?

Accepted Answer

$$0.50\ \mathrm{M}$$

Question 4

Which of the following is the correct net ionic equation for the reaction between aqueous solutions of $$\mathrm{Na_2SO_4}$$ and $$\mathrm{$$BaCl_2$$}$$?

Accepted Answer

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

Question 5

Which of the following acids is classified as a strong acid?

Accepted Answer

$$\mathrm{$$HNO_3$$}$$

Question 6

A $$25.0\ \mathrm{mL}$$ sample of $$0.100\ \mathrm{M}$$ $$\mathrm{H_2SO_4} is $$titrated with $$0.200\ \mathrm{M}$$ $$\mathrm{NaOH}. $$What volume of $$\mathrm{NaOH} is $$required to reach the equivalence point? (Assume complete reaction.)

Accepted Answer

$$25.0\ \mathrm{mL}$$

Question 7

Which of the following statements about oxidation numbers is correct?

Accepted Answer

The oxidation number of oxygen in $$\mathrm{H_2O_2} is$$ $$-1.$$

Question 8

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

Accepted Answer

$$\mathrm{H_2$}$$

Question 9

A sample of gas occupies $$10.0\ \mathrm{L} at$$ $$2.00\ \mathrm{atm}$$ and $$300\ \mathrm{K}. $$What volume will it occupy at $$1.00\ \mathrm{atm}$$ and $$300\ \mathrm{K}$$?

Accepted Answer

$$20.0\ \mathrm{L}$$

Question 10

Which of the following best explains why real gases deviate from ideal behavior at high pressures?

Accepted Answer

Intermolecular forces and finite molecular volume become significant.

Question 11

Which of the following is the correct balanced equation for the reaction of $$\mathrm{Na_2CO_3}$$ with $$\mathrm{HCl}$$, including the gas formed?

Accepted Answer

$$\mathrm{Na_2CO_3 (aq) + 2HCl (aq) \rightarrow 2NaCl (aq) + H_2O (l) + CO_2$ (g)}$$

Question 12

A $$2.00\ \mathrm{g}$$ sample of an unknown gas occupies $$1.00\ \mathrm{L} at$$ $$1.00\ \mathrm{atm}$$ and $$273\ \mathrm{K}. $$What is the molar mass of the gas?

Accepted Answer

$$44.8\ \mathrm{g/mol}$$

Question 13

Which of the following pairs of solutions will produce a precipitate when mixed?

Accepted Answer

$$\mathrm{$$AgNO_3$$ (aq)}$$ and $$\mathrm{NaCl (aq)}$$

Question 14

Which of the following statements about normality ($$N) is $$correct?

Accepted Answer

Normality is the number of equivalents of solute per liter of solution.

Question 15

A $$5.00\ \mathrm{L}$$ container holds $$2.00\ \mathrm{mol} of$$ $$\mathrm{O_2$}$$, $$1.00\ \mathrm{mol} of$$ $$\mathrm{N_2$}$$, and $$1.00\ \mathrm{mol} of$$ $$\mathrm{CO_2$} at$$ $$300\ \mathrm{K}. $$What is the partial pressure of $$\mathrm{O_2$} in $$the container? ($$R = 0.0821\ \mathrm{L\ atm\ $$mol^{-1}$$\ K$$^{-1}$$})$$

Accepted Answer

$$9.84\ \mathrm{atm}$$

Question 16

Which of the following best describes the relationship between temperature and the average kinetic energy of a gas?

Accepted Answer

The average kinetic energy is directly proportional to the absolute temperature.

Question 17

Which of the following is the correct formula for dinitrogen pentoxide?

Accepted Answer

$$\mathrm{N_2O_5}$$

Question 18

A $$50.0\ \mathrm{mL}$$ sample of $$0.200\ \mathrm{M}$$ $$\mathrm{HCl} is $$mixed with $$50.0\ \mathrm{mL} of$$ $$0.200\ \mathrm{M}$$ $$\mathrm{NaOH}. $$What is the resulting pH of the solution?

Accepted Answer

7.00

Question 19

Which of the following is the correct balanced redox reaction for the reaction between $$\mathrm{Zn}$$ and $$\mathrm{Cu$$^{2+}$$} in $$aqueous solution?

Accepted Answer

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

Chem 180 Exam #2 Study Guide: Chemical Compounds, Reactions in Solution, and Properties of Gases

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