ASESMEN HARIAN SIFAT KOLIGATIF LARUTAN

Quiz
•
Chemistry
•
12th Grade
•
Medium
M. Yasin
Used 2+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Molalitas dari larutan 20% massa etanol (C2H5OH) dalam air adalah ….
( Mr C2H5OH = 46 )
0,4
3,4
4,4
5,4
6,4
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Fraksi mol glukosa dalam air 0,2. Tekanan uap jenuh air pada suhu 20oC sebesar 17,5 mmHg. Tekanan uap jenuh larutan pada suhu itu adalah ….
4,5 mmHg
14,0 mmHg
17,5 mmHg
17,7 mmHg
21,0 mmHg
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Diketahui tekanan uap air murni pada suhu 25oC sebesar 28 mmHg, sedangkan tekanan uap larutan yang mengandung 18 gram zat non elektrolit dalam 90 gram air sebesar 25 mmHg. Massa molekul relatif zat terlarut tersebut adalah ....
30
60
75
90
120
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Diketahui tekanan uap air murni pada suhu 25oC sebesar 28 mmHg, sedangkan tekanan uap larutan yang mengandung 18 gram zat non elektrolit dalam 90 gram air sebesar 25 mmHg. Massa molekul relatif zat terlarut tersebut adalah ....
30
60
75
90
120
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Ke dalam 250 gram air dilarutkan 9 gram glukosa (Mr=180), kemudian ditambahkan lagi 15 gram urea (Mr=60). Jika Kb air = 0,52oC/m, maka titik didih larutan yang terjadi adalah ….
100,104oC
100,520oC
100,624oC
101,04oC
106,24oC
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Suatu larutan urea dalam air mempunyai penurunan titik beku 0,465oC. Bila Kf air = 1,86oC/m dan Kb air = 0,52oC/m, maka kenaikkan titik didih larutan urea tersebut adalah ….
0,13oC
0,26oC
0,39oC
0,52oC
1,30oC
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Berapa gram senyawa non elektrolit yang mempunyai massa molekul relatif 80 harus dilarutkan dalam 300 gram air agar larutan membeku pada suhu -3,1oC ? Kf air =1,86
2 gram
4 gram
20 gram
40 gram
80 gram
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