Sumatif 1
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Hard
Hasniar Basra
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21 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Ke dalam 1 kg air dilarutkan 120 gram CH3COOH (Mr = 60) yang memiliki α = 0,5. Jika Kb air = 0,5, titik didih larutan adalah …
100,50C
1010C
101,50C
1020C
102,50C
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Pengertian yang tepat tentang kemolalan adalah banyaknya zat terlarut dalam …
1 liter larutan
1 liter pelarut
1000 gram larutan
1000 gram pelarut
1 gram pelarut
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Molalitas larutan H2SO4 46% adalah ... (Ar H=1; S=32; O=16)
2,17 m
4,34 m
8,69 m
13,0 m
17,3 m
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Diantara larutan di bawah ini yang mempunyai tekanan osmosis paling besar adalah …(anggap molalitasnya sama)
NaCl
C6H12O6
BaCl2
CO(NH2)2
NaOH
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Di antara kelima macam larutan di bawah ini yang titik didih larutannya paling tinggi adalah…
Na2CO3 0,04 m
C6H12O6 0,08 m
Mg(NO3)2 0,03 m
CO(NH2)2 0,06 m
CuSO4 0,04 m
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Tentukan uap jenuh air murni pada suhu 300 C adalah 31,8 mmHg. Jika fraksi mol air 0,6, maka penurunan tekanan uap jenuh larutan tersebut adalah….
3,18 mmHg
9,54 mmHg
12,72 mmHg
19,08 mmHg
25,44 mmHg
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Penerapan sifat koligatif larutan berupa tekanan osmotik dalam kehidupan sehari-hari yang tepat adalah ...
penyulingan fraksi-fraksi minyak bumi
penambahan etilen glikol pada radiator mobil
penggunaan garam CaCl2 untuk mencairkan salju
penggunaan garam dapur untuk membasmi lintah dan keong sawah
pembuatan campuran pendingin sebagai bahan pembuat es putar
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