UH SIfat Koligatif Larutan [kelas 12]
Quiz
•
Science
•
12th Grade
•
Hard
ELSAFIRA 1706989065
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20 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Suatu zat nonelektrolit dilarutkan ke dalam air. Pada suhu tertentu tekanan uap jenuh air murni adalah 30 mmHg. Jika fraksi mol air = 0,6, maka tekanan uap jenuh larutan pada suhu tersebut adalah .... mmHg (5 poin)
18
17
15
12
6
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Asam benzoat (Mr = 122) sebanyak 12,2 gram dilarutkan ke dalam 122 gram etanol menyebabkan kenaikan titik didih 1oC. Besarnya tetapan kenaikan titik didih molal etanol (Kd) adalah..... (5 poin)
22,4
1,83
1,55
1,22
1,71
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sebanyak 1,8 gram zat non elektrolit dilarutkan ke dalam 200 gram air. Bila penurunan titik beku larutan 0,93oC (Kb = 1,86), maka massa molekul relatif zat tersebut adalah.... (5 poin)
21
18
19
20
22
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Kenaikan titik didih molal dan penurunan titik beku molal ditentukan oleh.... (2 poin)
derajat ionisasi
konsentrasi larutan
tekanan
jenis larutan
jenis pelarut
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diantara kelima macam larutan di bawah ini yang titik bekunya paling tinggi adalah.... (10 poin)
Na2CO3 0,3 M
Mg(NO3)2 0,2 M
CH3COOH 0,1 M Ka = 10-5
CuSO4 0,2 M
Glukosa 0,8 M
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sebanyak 18 gram glukosa (Mr = 180) dilarutkan dalam 72 gram air. Pada suhu tertentu, tekanan uap air murni = 20,1 cmHg. Maka penurunan tekanan uap larutan glukosa tersebut adalah.... (5 poin)
19,60 cmHg
9,80 cmHg
4,90 cmHg
1,96 cmHg
0,49 cmHg
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kelarutan CaCl2 dalam air pada 0oC adalah 5,4 molal. Jika Kb air= 1,86oC/m, penurunan titik beku larutan CaCl2 0,27 molal adalah.... (5 poin)
1,0o C
1,5o C
2,7o C
3,0o C
5,0o C
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