Question 1

Which of the following best describes the oxidation number of oxygen in the compound $$\mathrm{H_2O_2} ($$hydrogen peroxide)?

Accepted Answer

$$-1$$

Question 2

When naming the binary ionic compound $$\mathrm{$$FeCl_3$$}$$, which of the following is the correct name?

Accepted Answer

Iron(III) chloride

Question 3

Which of the following is the correct formula for ammonium sulfate?

Accepted Answer

$$\mathrm{(NH_4$)_2SO_4}$$

Question 4

Which statement correctly distinguishes between polar and non-polar covalent bonds?

Accepted Answer

Polar covalent bonds have unequal sharing of electrons due to differences in electronegativity.

Question 5

Which of the following molecules has a linear geometry according to VSEPR theory?

Accepted Answer

$$\mathrm{CO_2$}$$

Question 6

What is the oxidation number of sulfur in $$\mathrm{SO_4$^{2-}}$$?

Accepted Answer

$$+6$$

Question 7

Which of the following is a double covalent bond?

Accepted Answer

The bond in $$\mathrm{O_2$}$$

Question 8

Which of the following is a redox reaction?

Accepted Answer

$$\mathrm{2Na + Cl_2$ \rightarrow 2NaCl}$$

Question 9

Balance the following equation: $$\mathrm{C_2H_6 + O_2$ \rightarrow CO_2$ + H_2O}. $$What is the coefficient for $$\mathrm{O_2$}$$?

Accepted Answer

7

Question 10

Which of the following is the net ionic equation for the reaction between $$\mathrm{$$AgNO_3$$}$$ and $$\mathrm{NaCl} in $$aqueous solution?

Accepted Answer

$$\mathrm{Ag^+ (aq) + Cl^- (aq) \rightarrow AgCl (s)}$$

Question 11

Which of the following is the oxidizing agent in the reaction $$\mathrm{Zn + Cu$$^{2+}$$ \rightarrow Zn$$^{2+}$$ + Cu}$$?

Accepted Answer

$$\mathrm{Cu$$^{2+}$$}$$

Question 12

Which type of reaction is represented by $$\mathrm{2KClO_3 \rightarrow 2KCl + 3O_2}$$?

Accepted Answer

Decomposition

Question 13

A student mixes $$\mathrm{Ba(NO_3$)_2}$$ and $$\mathrm{Na_2SO_4} in $$water. What is the precipitate formed?

Accepted Answer

$$\mathrm{$$BaSO_4$$}$$

Question 14

Which of the following is the correct stoichiometric relationship for the reaction $$\mathrm{2H_2 + O_2$ \rightarrow 2H_2O}$$?

Accepted Answer

2 moles of $$\mathrm{H_2$}$$ react with 1 mole of $$\mathrm{O_2$} to $$produce 2 moles of $$\mathrm{H_2O}$$

Question 15

If 10.0 g of $$\mathrm{H_2O} is $$produced from the reaction $$\mathrm{2H_2 + O_2$ \rightarrow 2H_2O}$$, what is the percent yield if the theoretical yield is 12.0 g?

Accepted Answer

$$83.3\%$$

Question 16

Which of the following best describes a molecular equation?

Accepted Answer

Shows all reactants and products as compounds, not ions.

Question 17

Which of the following is a single displacement reaction?

Accepted Answer

$$\mathrm{Zn + 2HCl \rightarrow $$ZnCl_2$$ + H_2$}$$

Question 18

Which of the following compounds is non-polar?

Accepted Answer

$$\mathrm{$$CCl_4$$}$$

Question 19

Which of the following is the correct name for $$\mathrm{Na_2CO_3}$$?

Accepted Answer

Sodium carbonate

General Chemistry: Chapters 4 & 5 Review Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard