PH#1 : LARUTAN KOLIGATIF
Quiz
•
Chemistry
•
12th Grade
•
Medium
Ibrahim Wahyudi
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20 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Molalitas larutan yang terdiri dari 6 gram urea, CO(NH2)2 (Mr = 60) dalam 100 gram air adalah . . . .
0,1 m
0,25 m
1,00 m
2,5 m
5 m
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Fraksi mol larutan methanol CH3OH dalam air adalah 0,50. Kosentrasi methanol dalam arutanini dinyataan dalam persen berat methanol adalah …. Ar C = 12, O = 16, H =1)
64 %
54%
63%
62%
60%
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Fraksi mol larutan 6,4 % naftalena (Mr = 128) dalam benzena (Mr = 78) adalah . . . .
0,01
0,02
0,03
0,04
0,05
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Molalitas larutan etanol (C2H5OH) 46% adalah . . . . (Ar H = 1, C = 12 dan O = 16)
1,85 m
10,00 m
18,52 m
26,00 m
36,82 m
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Untuk membuat larutan NaOH 2 m, maka ke dalam 250 gram air harus ditambahkan NaOH sebanyak . . . .(Ar Na = 23, O = 16 dan H = 1)
20 gram
40 gram
80 gram
120 gram
160 gram
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Tekanan uap larutan yang terdiri dari 30 gram asam asetat (Mr = 60) yang dianggap non elektrolit, dalam 171 gram air, jika tekanan uap murni pada suhu 298 K = 23,76 cm Hg adalah . . . .
1,250 cmHg
1,188 cmHg
11,880 cmHg
22,509 cmHg
22,572 cmHg
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Suatu zat nonelektrolit yang massanya 8 gram dilarutkan dalam 200 gram air. Larutan itu mendidih pada temperatur 100,8oC. Maka Mr zat tersebut adalah ….(Kb air = 0,51oC)
255
355
155
125
100
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