Molaritas suatu larutan yang mengandung 20% berat C2H5OH (Mr = 46) adalah ...
PAS KIMIA KELAS 12 MIA 1

Quiz
•
Other
•
12th Grade
•
Hard
RIANITA aliyah islamiyah
Used 11+ times
FREE Resource
35 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
6,4 m
5,4 m
4,4 m
3,4 m
0,4 m
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Banyaknya MgSO4 (Mr = 120) yang dilarutkan dalam 400 gram air untuk membuat larutan 0,5 m adalah ...
24 gram
36 gram
48 gram
56 gram
72 gram
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Fraksi mol etanol (Mr = 46) dalam air adalah 0,5. Jika dinyatakan dalam persen berat konsentrasi etanol adalah ...
54 %
62 %
64 %
72 %
75 %
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Sebanyak 32 gram metanol (Mr = 32) dicampur dengan 72 gram air (Mr = 18). Jika tekanan uap air pada suhu tersebut 18 mmHg, maka tekanan uap larutan adalah ...
3,6 mmHg
7,2 mmHg
14,4 mmHg
15,5 mmHg
22,5 mmHg
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Suatu larutan yang mengandung 12 gram urea dalam 250 gram air akan membeku pada suhu ... (Kf = 1,86 ; Ar C = 12 ; O = 16 ; N = 14 ; H = 1).
-0,86 oC
-1,16 oC
-1,36 oC
-1,49 oC
-1,59 oC
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Sebanyak 36 gram zat non elektrolit dilarutkan ke dalam 500 gram air. Bila titik didih larutan 100,28 oC (Kb air = 0,52 oC/m, maka Mr zat tersebut adalah ...
60
90
180
270
342
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Jika larutan A mendidih pada suhu 101,04 oC, maka larutan tersebut akan membeku pada suhu ... (Kb = 0,52 oC/m ; Kf = 1,86 oC/m).
-0,93 oC
-1,86 oC
-2,96 oC
-3,56 oC
-3,72 oC
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