AP Chemistry Exam, HELP!!!!?

Question

18. How much water must be added to 294 grams of H2SO4 to form a 6 molar solution of Sulfuric Acid?

a. 3.2 L.

b. 1.5 L

c. 0.5 L. (500 mL)

d. 0.78 L. (780 mL)

19. 500 mL of 9 M Sulfuric Acid (H2SO4) is combined with 750 mL of 6 M Barium Hydroxide (Ba(OH)2 producing Barium Sulfate (BaSO4) and water. What mass of Barium Sulfate will be produced. (assume 100% yield)

a. 575.2 g

b. 2100.6 g

c. 1050.3 g

d. 466.8 g

20. Which of the following must be true if a solution is to be considered an acid:

a. [H+] > [OH-]

b. [H+] < [OH-]

c. [H+]= [OH-]

d. Kw = [H+]/[OH-]

21. A base will usually contain:

a. The Hydroxide Ion (OH)

b. Hydrogen

c. Ammonia

d. None of the above

22. Which of the following is a conjugate acid-base pair?

a. HCl/OCl-

b. H2SO4/SO4(2-)

c. HCl, Cl-

d. H3O+/OH-

e. None of these

28. Which of the following has a Hydrogen Bond as it's major attractive force.

a. Ns2S

b. HF

c. N2

d. NH3

e. None of these

Answer 1

22 is D

Answer 2

18) 0.5L answer c

19) answer c

20)  answer a

21) answer a

22) answer b (not sure)

28) NH3