Diketahui tetapan penurunan titik beku molal suatu pelarut (Kf = 5,40C/m). Jika 50 gram zat non elektrolit (Mr=200) dilarutkan dalam 500 gram pelarut tersebut, titik beku turun sebesar….. (10 poin)
PraUH: Sifat Koligatif Larutan [KELAS 12]

Quiz
•
Science
•
12th Grade
•
Hard
ELSAFIRA 1706989065
Used 38+ times
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15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
0,054oC
0,54oC
0,27oC
2,7oC
5,4oC
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Suatu larutan gliserin, C3H5(OH)3 (Mr=92 g/mol) dibuat dengan melarutkan 45 gram senyawa tersebut dalam 100 gram air, maka molalitas gliserin dalam larutan tersebut adalah…. (10 poin)
8,01
4,89
31
0,31
0,081
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Di antara kelima larutan berikut, larutan dengan titik didih paling rendah adalah.... (5 poin)
C6H12O6 0,03 m
Mg(NO3)2 0,02 m
NaCl 0,02 m
Al2(SO4)3 0,01 m
KAl(SO4)2 0,04 m
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jika tekanan osmotik dari 500 mL larutan fruktosa C6H12O6 pada 320C sebesar 2 atm, massa fruktosa yang terlarut sebanyak…. (Ar C=12, H=1, O=16) (10 poin)
7,2 gram
9,0 gram
14,4 gram
18,0 gram
45,0 gram
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Tekanan uap jenuh air pada 1000C adalah 760 mmHg. Jika 18 gram glukosa (Mr=180) dilarutkan dalam 90 gram air (Mr=18) maka pada suhu tersebut tekanan uap larutannya adalah…. (10 poin)
745,1 mmHg
754,1 mmHg
757,2 mmHg
777,5 mmHg
775,2 mmHg
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Gambar berikut menyatakan diagram P-T air, larutan urea 0,2M. Titik didih larutan urea 0,2 M dinyatakan oleh titik.... (5 poin)
G
H
B
J
I
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Larutan yang memiliki tekanan osmotik paling kecil adalah.... (R= 0,082, T=270C) (5 poin)
1
2
3
4
5
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