Sulfuric acid ($$\text{H}_2\text{SO}_4)$$

Question 1

Which of the following correctly describes the molecular geometry of $$	ext{CO}_2$$ according to VSEPR theory?

Accepted Answer

Linear, because there are two regions of electron density and no lone pairs on the central atom

Question 2

How many sigma ($$\sigma) $$and pi ($$\pi) $$bonds are present in the molecule $$	ext{C}_2	ext{H}_4 ($$ethene)?

Accepted Answer

5 $$\sigma$$ bonds and 1 $$\pi$$ bond

Question 3

Which of the following best describes the hybridization of the central atom in $$	ext{NH}_3$$?

Accepted Answer

$$sp^3$$

Question 4

When sodium reacts with chlorine to form sodium chloride, which type of electron transfer diagram would best represent the bonding?

Accepted Answer

A diagram showing sodium donating an electron to chlorine, resulting in ions

Question 5

What is the correct formula for magnesium chloride, an ionic compound?

Accepted Answer

$$	ext{MgCl}_2$$

Question 6

Which of the following is the correct name for $$	ext{H}_2	ext{SO}_4$$?

Accepted Answer

Sulfuric acid

Question 7

A solution is prepared by dissolving 0.5 mol of NaCl in enough water to make 1.0 L of solution. What is the molarity ($$M) of $$the solution?

Accepted Answer

$$0.5\ M$$

Question 8

If 250 mL of a 2.0 M $$	ext{HCl}$$ solution is diluted to a final volume of 1.0 L, what is the final concentration?

Accepted Answer

$$0.5\ M$$

Question 9

Which of the following is the empirical formula for a compound containing 40% carbon, 6.7% hydrogen, and 53.3% oxygen by mass?

Accepted Answer

$$	ext{CH}_2	ext{O}$$

Question 10

Which of the following best describes the difference between ionic and covalent compounds?

Accepted Answer

Ionic compounds are formed by transferring electrons, while covalent compounds are formed by sharing electrons

Question 11

How many lone pairs are present on the central atom in the Lewis structure of $$	ext{H}_2	ext{O}$$?

Accepted Answer

2

Question 12

Which of the following acids is a strong acid commonly used in car batteries?

Accepted Answer

Sulfuric acid ($$	ext{H}_2	ext{SO}_4)$$

Question 13

What is the molecular geometry of $$	ext{BF}_3$$ according to VSEPR theory?

Accepted Answer

Trigonal planar

Question 14

A student mixes 100 mL of 1.0 M NaOH with 400 mL of water. What is the final concentration of NaOH?

Accepted Answer

$$0.2\ M$$

Question 15

Which of the following compounds contains both ionic and covalent bonds?

Accepted Answer

$$	ext{NaNO}_3$$

Question 16

What is the mass of NaCl required to prepare 500 mL of a 1.0 M solution? (Molar mass of NaCl = 58.44 g/mol)

Accepted Answer

29.22 g

Question 17

Which of the following best explains why $$	ext{CH}_4$$ has a tetrahedral geometry?

Accepted Answer

Because there are four regions of electron density around the central atom

Question 18

Which of the following is the correct Lewis structure for $$	ext{O}_2$$?

Accepted Answer

A structure with a double bond between the two oxygen atoms

Question 19

A compound has a molecular formula of $$	ext{C}_6	ext{H}_{12}	ext{O}_6. $$What is its empirical formula?

Accepted Answer

$$	ext{CH}_2	ext{O}$$

General Chemistry Study Guide: Molecular Structure, Nomenclature, and Calculations

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