Question 1

Which of the following is the correct name for the acid with the formula $$\mathrm{HBr\ (aq)}$$?

Accepted Answer

Hydrobromic acid

Question 2

What is the correct formula for sulfuric acid?

Accepted Answer

$$\mathrm{H_2SO_4}$$

Question 3

Which of the following statements about acids is TRUE?

Accepted Answer

Acids generally have formulas that start with H

Question 4

What is the correct name for the acid $$\mathrm{$$HNO_2$$}$$?

Accepted Answer

Nitrous acid

Question 5

Calculate the formula mass of $$\mathrm{Na_2O} ($$sodium oxide). (Atomic masses: Na = 22.99 amu, O = 16.00 amu)

Accepted Answer

$$62.0\ \mathrm{amu}$$

Question 6

A compound contains 24.5 g nitrogen and 70.0 g oxygen. What is the empirical formula of the compound? (Atomic masses: N = 14.01 g/mol, O = 16.00 g/mol)

Accepted Answer

$$\mathrm{N_2O_5}$$

Question 7

Which of the following is the correct name for $$\mathrm{HF\ (aq)}$$?

Accepted Answer

Hydrofluoric acid

Question 8

What is the mass percent of chlorine in $$\mathrm{CCl_2F_2}$$? (Atomic masses: C = 12.01 g/mol, Cl = 35.45 g/mol, F = 19.00 g/mol)

Accepted Answer

$$58.64\%$$

Question 9

Which of the following acids is an oxyacid?

Accepted Answer

$$\mathrm{H_2SO_4}$$

Question 10

A sample of aspirin contains 60.00 g C, 4.48 g H, and 35.52 g O. What is the empirical formula? (Atomic masses: C = 12.01 g/mol, H = 1.008 g/mol, O = 16.00 g/mol)

Accepted Answer

$$\mathrm{C_9H_8O_4}$$

Question 11

If the empirical formula of a compound is $$\mathrm{CH_2O}$$ and its molar mass is $$180.2\ \mathrm{g/mol}$$, what is its molecular formula?

Accepted Answer

$$\mathrm{C_6H_{12}O_6$}$$

Question 12

Which of the following is the correct formula for nitrous acid?

Accepted Answer

$$\mathrm{$$HNO_2$$}$$

Question 13

Which of the following is NOT a characteristic of acids?

Accepted Answer

They taste bitter

Question 14

What is the correct name for $$\mathrm{$$HClO_3$$}$$?

Accepted Answer

Chloric acid

Question 15

If a compound has a mass percent composition of 40.0% C, 6.7% H, and 53.3% O, what is its empirical formula? (Atomic masses: C = 12.01 g/mol, H = 1.008 g/mol, O = 16.00 g/mol)

Accepted Answer

$$\mathrm{CH_2O}$$

Question 16

Which of the following is the correct formula for hydroiodic acid?

Accepted Answer

$$\mathrm{HI}$$

Question 17

A patient is advised to consume less than 2.4 g of sodium per day. What is the maximum mass of sodium chloride ($$\mathrm{NaCl}) $$they can consume and still be within FDA guidelines? (Atomic masses: Na = 22.99 g/mol, Cl = 35.45 g/mol)

Accepted Answer

$$6.1\ \mathrm{g}$$

Question 18

Which of the following is the correct name for $$\mathrm{H_2SO_3}$$?

Accepted Answer

Sulfurous acid

Question 19

Which of the following is the correct formula for phosphoric acid?

Accepted Answer

$$\mathrm{H_3PO_4}$$

Question 20

Which of the following is the correct formula for hydrochloric acid?

Accepted Answer

$$\mathrm{HCl}$$

Acids, Formula Mass, and Composition of Compounds

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