Ujian Chapter - 1 Sifat Koligatif larutan (12 September 2024)
Quiz
•
Chemistry
•
11th Grade
•
Hard
andi malik hakim
Used 4+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 7 pts
Berapa molalitas larutan C2H5OH dengan berat 20%? (Mr C2H5OH =46 g/mol)
6.4
5.4
4.4
3.4
0.4
2.
MULTIPLE CHOICE QUESTION
5 mins • 3 pts
Berapa molalitas larutan yang dibuat dengan mencampurkan 3 g urea dengan 200 g air? (Mr Urea = 60)
0,5 molal
0,25 molal
1 molal
3 molal
4,5 molal
3.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Dalam 900 g air, 3.6 g urea dilarutkan (Mr Urea = 60) dan (Mr Air = 18). Jika pada 20°C tekanan uap air jenuh adalah 17.54 mmHg, berapa penurunan tekanan uap ?
0.02
0.04
0.06
0.08
0.12
4.
MULTIPLE CHOICE QUESTION
10 mins • 15 pts
Dalam 900 g air, 3,6 g urea dilarutkan. Jika pada 20°C tekanan uap air jenuh adalah 17,54 mmHg, berapa tekanan uap larutan tersebut? (Mr Urea = 60 g/mol)
17.00
17.30
17.40
17.51
17.60
5.
MULTIPLE CHOICE QUESTION
10 mins • 15 pts
Jika fraksi mol urea dalam air adalah 0,25 dan tekanan uap jenuh urea pada 20°C adalah 27 mmHg, berapa tekanan uap jenuh air pada suhu yang sama?
30
34
35
36
37
6.
MULTIPLE CHOICE QUESTION
15 mins • 15 pts
Kandungan glukosa dalam pelarut CH3COOH adalah 45%, Kf= 3,57 °C/m, titik beku CH3COOH murni adalah 16,6 °C. Berapa titik beku larutan glukosa? (Mr Glukosa = 180)
0,25
0,34
0,38
0,42
0,45
7.
MULTIPLE CHOICE QUESTION
15 mins • 20 pts
25 gram larutan non-elektrolit dilarutkan dalam 700 gram asam asetat dan membeku pada 13,060°C. Jika titik beku asam asetat murni adalah 16,60°C dan Kf asam asetat adalah 3,57 °C/molal, berapa massa molar (Mr) senyawa tersebut?
36
37
38
39
40
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