

Sifat Koligatif Larutan
Presentation
•
Chemistry
•
3rd Grade
•
Practice Problem
•
Hard
Dea putri
Used 2+ times
FREE Resource
6 Slides • 0 Questions
1
Latihan Soal (Konsentrasi Larutan dan Penurunan Tekanan Uap Jenuh)
1. Natrium hidroksida sebanyak 10 gram dilarutkan ke dalam 250 gram air. Molalitas larutan natrium hidroksida tersebut adalah... (Na = 23, O = 16, H = 1)
A. 0,25 m
B. 0,5 m
C. 1,0 m
D. 1,5 m
E. 2 m
2
Molaritas larutan 3.2 gram metil alkohol (CH3OH) dalam 500 g air adalah...
A. 0,1
B. 0,2
C. 0,5
D. 1,0
E. 2,0
3
3. Diketahui perbandingan massa zat A (Ar = 27) dan pelarut air (Mr = 18) adalah 3:2. Fraksi mol zat A adalah...
A. 1/3
B. 1/2
C. 2/3
D. 3/2
E. 2
4
4. Urea CO(NH2)2 (Mr = 60 g/mol) sebanyak 10 gram dilarutkan dalam 90 mL air (Mr = 18 g/mol). Jika pada suhu 25 C tekanan uap jenuh air sebesar 62 cmHg, maka tekanan uap larutan urea tersebut adalah... (massa jenis air = 1 gram/mL)
A. 2 cmHg
B. 30 cmHg
C. 31 cmHg
D. 60 cmHg
E. 64 cmHg
5
5. Tekanan uap jenuh air pada suhu 18C adalah 15,5 mmHg. Jika ke dalam 14,4 g air dilarutkan 36 g glukosa (Mr = 180), maka penurunan tekanan uap larutan pada suhu tersebut adalah...
A. 3,10 mmHg
B. 3,86 mmHg
C. 7,75 mmHg
D. 11,6 mmHg
E. 12,4 mmHg
6
6. Tekanan uap air jenuh pada suhu 30 C adalah 31,8 mmHg dan fraksi mol suatu zat dalam air adalah 0,056 mol. Pada suhu 30 C, tekanan uap larutan adalah... mmHg
A. 1,78
B. 33,58
C. 17,8
D. 30,02
E. 28,30
Latihan Soal (Konsentrasi Larutan dan Penurunan Tekanan Uap Jenuh)
1. Natrium hidroksida sebanyak 10 gram dilarutkan ke dalam 250 gram air. Molalitas larutan natrium hidroksida tersebut adalah... (Na = 23, O = 16, H = 1)
A. 0,25 m
B. 0,5 m
C. 1,0 m
D. 1,5 m
E. 2 m
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