SOAL PRETEST KIMIA DASAR PAKET 1
Quiz
•
Chemistry
•
University
•
Hard
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1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Suatu sel elektrokimia dengan elektroda Zn dan Ag pada keadaan standar menghasilkan arus 0,75 A selama 321 menit. Diketahui nilai:
E0 Zn2+ | Zn = -0,76 V
E0 Ag+ | Ag = +0,8 V
maka pengurangan massa dianoda adalah … gram.
(F = 96.500 C, Ar Zn = 65, Ag = 108)
3.250
4.865
6.321
10.850
13.106
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
0.000 V
0.101 V
0.191 V
0.220 V
0.250 V
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Transisi elektron manakah pada atom hidrogen yang menghasilkan energi terbesar?
N3-
O2-
Mg2+
H
F-
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Berikut ini, partikel manakah yang mempunyai radius paling besar?
n = 2 → n = 3
n = 3 → n = 9
n = 9 → n = 3
n = 3 → n = 2
n = 9 → n = 2
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Diketahui potensial standar beberapa sel volta sebagai berikut:
P | P2+ || Q2+ | Q E0 = 2.46 V
R | R2+ || S2+ | S E0 = 1.1 V
R | R2+ || Q2+ | Q E0 = 1.56 V
Potensial standar sel P | P2+ || S2+ | S adalah…
1.1 V
2.00 V
2.66 V
3.56 V
4.02 V
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Dalam wadah 2 liter, gas H2 dan gas I2 bereaksi membentuk gas HI menurut persamaan reaksi:
H2(g) + I2(g) ↔ 2HI(g)
Jika pada kesetimbangan reaksi terdapat 0.1 mol H2, 0.2 mol I2 dan 0.5 mol HI, dengan tekanan total sebesar 5 atm, maka nilai Kp reaksi tersebut adalah…
7.50
12.5
25.2
32.5
50.0
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Suatu campuran yang hanya mengandung gas metana dan etana dibakar sempurna sehingga dihasilkan 220 gram CO2. Jika massa campuran yang dibakar adalah 76 gram, maka massa gas etana di dalam campuran gas tersebut (Ar C= 12 H = 1 O = 16) adalah…
16 gram
30 gram
32 gram
44 gram
60 gram
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