How much water, in liters, must be added to 0.5 L of 6 M HCl to make it 2 M?

a. 0.33

b. 0.5

c. 1

d. 1.5

e. 2

How many liters of 0.2805 M C6H12O6 (aq) contain 1.000 g of C6H12O6?

a) 0.001557 L b) 0.01979 L c) 0.2805 L d) 3.565 L e) 50.5 L

2. If 5.15 g Fe (NO3) 3 is dissolved in enough water to make exactly 150.0 mL of solution, what is the molar concentration of nitrate ion?

a) 0.00319 M b) 0.0343 M c) 0.142 M d) 0.313 M e) 0.426 M

3. What is the mass of sodium iodide in 50.0 mL of 2.63  10-2 M NaI (aq) ?

a) 0.00132 g b) 0.00877 g c) 0.0788 g d) 0.197 g e) 78.8 g

4. If 25.00 mL of 4.50 M NaOH (aq) is diluted with water to a volume of 750.0 mL, what is the molarity of the diluted NaOH (aq) ?

a) 0.0333 M b) 0.150 M c) 0.155 M d) 6.67 M e) 1.35 * 103 M

5. What volume of 0.15 M HCl (aq) must be diluted to make 2.0 L of 0.050 M HCl (aq) ?

a) 0.015 L b) 0.10 L c) 0.30 L d) 0.67 L e) 6.0 L

6. What is the pH of 0.51 M HCl (aq) ?

a) - 0.29 b) 0.29 c) 0.31 d) 0.51 e) 0.67

7. The pH of an aqueous NaOH solution is 13.17. What is the hydrogen ion concentration of this solution?

a) 6.8 * 10-14 M b) 1.9 * 10-6 M c) 0.89 M d) 1.1 M e) 1. 5 * 1013 M

8. The pH of a vinegar solution is 4.15. What is the H3O + concentration of the solution?

a) 7.1 * 10-5 M b) 1.6 * 10-2 M c) 0.62 M d) 1.4 M e) 1.4 * 104 M

9. An aqueous nitric acid solution has a pH of 1.15. What mass of HNO3 is present in 2.0 L of this solution?

a) 0.071 g b) 0.14 g c) 2.2 g d) 4.5 g e) 8.9 g

10. Iron reacts with hydrochloric acid.

Fe (s) + 2 HCl (aq) → FeCl2 (aq) + H2 (g)

What volume of 2.55 M HCl (aq) will react with 35.0 g Fe (s) ?

a) 0.246 L b) 0.492 L c) 1.60 L d) 3.20 L e) 27.5 L

11. What volume of 0.200 M Na2SO4 (aq) will completely react with 50.0 mL of 0.135 M Ba (NO3) 2 (aq) ?

Na2SO4 (aq) + Ba (NO3) 2 (aq) → BaSO4 (s) + 2 NaNO3 (aq)

a) 33.8 mL b) 67.5 mL c) 74.1 mL d) 148 mL e) 540. mL

12. A mass of 0.4113 g of an unknown acid, HA, is titrated with NaOH. If the acid reacts with 28.10 mL of 0.1055 M NaOH (aq), what is the molar mass of the acid?

a) 2.965 * 10-3 g/mol

b) 9.128 g/mol

c) 138.7 g/mol

d) 337.3 g/mol

e) 820.7 g/mol

13. A 25.00 mL sample of KOH is titrated with 21.83 mL of 0.2120 M HCl (aq). What is the concentration of the KOH solution?

a) 0.0006720 M b) 0.002574 M c) 0.1851 M d) 0.2428 M e) 4.119 M