Download 20 MCQs with Answers - General Chemistry II | CHEM 1120 and more Exams Chemistry in PDF only on Docsity!
Do not write on this test. Write your name on the answer sheet and circle the letter for the correct answers.
E = E F^! (0.0592/n)log 10 Q
- What is the value for the equilibrium constant for the following reaction? Cu(OH) 2 + 4NH 3 º Cu(NH 3 ) 4 2+^ + 2OH! Ksp(Cu(OH) 2 ) = 1.6 × 10- Kd(Cu(NH 3 ) 4 2+) = 8.3 × 10!^13
a. 1.3 × 10!^31 b. 5.3 × 10^6 c. 7.7 × 10^30 d. 1.9 × 10!^7 e. 3.1 × 10!^21
- What is the rate expression for the following set of reactions?
step 1: NO 2 Br(g)! NO 2 (g) + Br(g) slow step step 2: NO 2 Br(g) + Br(g)! NO 2 (g) + Br 2 (g) fast step overall: 2 NO 2 Br(g)! 2 NO 2 (g) + Br 2 (g)
a. Rate = k(PNO2Br)^2 b. Rate = k(PNO2Br)^2 PBr c. Rate = kPNO2BrPBr d. Rate = kPNO2Br e. Rate = k(PNO2Br)^2 (PBr)-
- What is the rate expression for the following set of reactions?
step 1: 2NO 2 (g) º NO 3 (g) + NO(g) fast step 2: NO 3 (g) + CO(g)! NO 2 (g) + CO 2 (g) slow overall: NO 2 (g) + CO(g)! NO(g) + CO 2 (g)
a. Rate = k(PNO2)^2 b. Rate = k(PNO2)^2 PCO(PNO)- c. Rate = kPNO2PCOPNO d. Rate = kPNO2PCO e. Rate = kPNO
- The half life of tritium is 12.32 yr. How long would it take for 67% of tritium to decay away? (ln 2 = 0.69315)
a. 19.71 yr. b. 7.10 yr. c. 11.91 yr. d. 74.7 yr. e. 62.1 yr.
- In the following reaction, initial data in the table below was obtained.
A + B! C + D
Rate /M s-1^ [A] [B] 1.0 × 10-2^ 0.10 0. 2.0 × 10-2^ 0.20 0. 4.0 × 10-2^ 0.20 0. 2.0 × 10-2^ 0.10 0.
What are the reaction orders for A and B?
a. A: 0th^ B: 1st b. A: 1st^ B: 0th c. A: 2nd^ B: 0th d. A: 1st^ B: 2nd e. A: 1st^ B: 1st
- The following data was obtained in the bleaching of a dye
time /min Adsorbance 0.00 0. 1.00 0. 2.00 0. 3.00 0. 4.00 0. What is the order of the reaction?
a. 0th^ order b. ½ order c. 1st^ order d. 2nd^ order e. 3rd^ order
a. !3.64 V b. +3.28 V c. !2.46 V d. +2.10 V e. +3.64 V
- What voltage would one obtain from the following galvanic cell?
Zn | Zn2+^ (2.0 M) || Cu2+(0.010 M) | Cu
a. 1.1047 V b. 1.1728 V c. 1.0366 V d. 0.9684 V e. 0.9479 V
- Which of the following compounds has a carboxylic acid group?
a. CH 3 CHO b. CH 3 CH 2 OH c. CH 3 OCH 3 d. CH 3 COOH e. CH 3 COCH 3
- Which of the following types of compounds are weak bases?
a. a primary amine b. a carboxylic acid c. an alcohol d. an ester e. a ketone
- What is the product of the reaction (in the presence of a catalyst such as sulfuric acid) between an amine and a carboxylic acid?
a. an ester b. a carboxylic acid c. an ether d. an amide e. an aldehyde
- What is the product for the following reaction?
CH 3 CH=CH 2 + Br 2!?
a. CH 3 CH 2 CHBr 2 b. CH 3 CH 3 + CH 2 Br 2 c. CH 2 CH 2 + CH 2 Br 2 d. CH 3 CHBrCH 2 Br e. CH 4 + BrHC=CHBr
- Which one of the following is the monomer for polyethylene?
a. CH 2 CH 2 (ethene) b. CH 2 C(CH 3 )CHCH 2 (isoprene) c. CH 3 CH 3 (ethane) d. CH(C 6 H 5 )CH 2 (styrene) e. HC/CH (ethyne)
- Which of the following is a weak acid?
a. C 6 H 5 NH 2 b. CH 3 CH 2 OCH 2 CH 3 c. C 6 H 5 COOH d. CH 3 CH 2 OH e. CH 3 COOCH 3
KEY:
1.d
2.d
3.b
4.a
5.e
6.d
7.b
8.a
9.b
10.a
11.e
12.a
13.d
14.c
15.d
16.a
17.d
18.d
19.a
20.c
