Test number 6 - Ace the SAT II Chemistry

1.The technique utilized to determine the unknown concentration of a known base is called:

(A) Distillation
(B) Chromatograph
(C) Fractional crystallization
(D) Filtration
(E) Titration

2. Carbon dioxide is a polar molecule BECAUSE it has polar covalent bonds

(A) First sentence is true but the second one is false
(B) First sentence is false but the second one is true
(C) Both sentences are false
(D) Both sentences are true and there is no correlation between them
(E) Both sentences are true and there is a correlation between them

3. Which of the following would have the highest pH?
(A) HCl
(B) CH3COOH
(C) KOH
(D) SO2
(E) we need to know their concentrations in order to give a correct result

4. What is the molarity of a hydrochloric acid solution, HCl(aq), if 18.25g of HCl is dissolved in enough water to make 1.0 L of solution?

(A) 0.1825 M
(B) 0.25 M
(C) 0.05 M
(D) 0.5 M
(E) 18.25 M


5.What is the oxidation number of sulphur in Na2SO4 ?

(A) -4
(B) 2
(C) 4
(D) 6
(E) -6

6. In a galvanic cell the cathode is charged

(A) positive
(B) negative
(C) neutrum
(D) it depends on the type of galvanic cell
(E) it depends on the reaction inside the galvanic cell

7.How many isomers does pentane C5H12 have?

(A) 1
(B) 2
(C) 3
(D) 4
(E) 5

8. Which of the following element is the most electronegative?

(A) Cl
(B) N
(C) H
(D) Na
(E) O

9.Which of the following compound is called ethane?

(A) CH4
(B) C2H2
(C) C2H4
(D) C2H6
(E) C6H6

10.If the pH of a solution increase the concentration of the H+ ions in the solution

(A) increases
(B) decreases
(C) remains constant
(D) depends on the solution
(E) depends on the initial concentration of the solution.