SIFAT KOLIGATIF LARUTAN
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Hard
Winarsih S.Pd
Used 8+ times
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13 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Sebanyak 20 gram natrium hidroksida (NaOH) dilarutkan dalam 200 mL air. Molalitas larutan NaOH (Mr = 40 g mol-1) yang terbentuk sebesar …. (ρair = 1 g mL-1)
1,0 m
2,5 m
3,0 m
4,5 m
5,0 m
2.
MULTIPLE CHOICE QUESTION
3 mins • 3 pts
Lautan-larutan berikut dalam julah massa zat terlarut sama (dalam air) yang memiliki tekanan uap paling kecil adalah ….
urea
(Mr = 60 g mol-1)
gula
(Mr = 342 g mol-1)
gliserol
(Mr = 92 g mol-1)
glukosa
(Mr = 180 g mol-1)
garam dapur
(Mr = 58,5 g mol-1)
3.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Titik didih larutan urea 0,2 M dinyatakan oleh titik ….
E
F
H
K
L
4.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
Suatu larutan dibuat dengan melarutkan 65 gram hemoglobin ke dalam air hingga volumenya 1 liter. Larutan ini mempunyai tekanan osmotik 50 kali lebih rendah daripada tekanan osmotik 1liter larutan lainnya yang mengandung 3,9 gram benzena (Mr = 78 g mol-1) pada suhu yang sama. Massa molekul relatif hemoglobin adalah ….
65.000 g mol-1
32.500 g mol-1
6.500 g mol-1
3.250 g mol-1
1.250 g mol-1
5.
MULTIPLE CHOICE QUESTION
3 mins • 3 pts
Jika 10 gram masing-masing senyawa berikut, dilarutkan dalam 1 kg air, larutan yang terbentuk dengan titik didih paling tinggi adalah larutan …. (Ar: H = 1 g mol-1, C = 12 g mol-1 , dan O = 16 g mol-1)
etanol (C2H5OH)
metanol (CH3OH)
butanol (C4H9OH)
glukosa (C6H12O6)
asam sitrat (C6H8O7)
6.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
Apabila seseorang memerlukan injeksi cairan nutrisi/infus, cairan tersebut harus bersifat isotonic dengan cairan dalam darah. Injeksi cairan nutrisi/infus (Mr NaCl = 58,5 g mol-1) harus isotonic dengan cairan dalam darah, berkisar 9,84 atm pada suhu ruangan 270C. Apabila seseorang memerlukan 1 liter cairan infus, massa NaCl yang dibutuhkan adalah …. (R = 0,082 L.atm.mol-1.K-1)
4,68 gram
5,85 gram
11,7 gram
23,4 gram
46,8 gram
7.
MULTIPLE CHOICE QUESTION
5 mins • 4 pts
Glukosa (Mr = 180 g mol-1) sebanyak 90 gram dilarutkan dalam 250 mL air (Mr = 18 g mol-1) pada suhu 250C. Jika tekanan uap air jenuh pada suhu tersebut 14,3 mmHg, penurunan tekanan uap larutan tersebut sebesar ….
0,5 mmHg
1,5 mmHg
2,5 mmHg
13,8 mmHg
15,0 mmHg
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