Untitled QuizPENILAIAN HARIAN 3.1 DAN 3.2
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Medium
husnaeni nawier
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15 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 2 pts
Berapakah molalitas zat terlarut dalam larutan berair yang titik bekunya 0,45oC jika diketahui Kf air = 1,86oC/m
0,142 molal
0,242 molal
0,233 molal
0,421 molal
0,5 molal
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
suatu larutan dibuat dengan melarutkan 18 gram glukosa dalam 150 gram air. larutan yang dihasilakan ternyata suhunya naik menjadi 100,340C hitunglah massa molar( Mr)
198,5296 g/mol
178,5296 g/mol
158,5296 g/mol
138,5296 g/mol
183,5296 g/mol
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
hitunglah penurunan titik beku larutan yang mengandung 0,175 mol zat terlarut nonelektrolit dalam benzena 1,25 kg
0,260oC
0,360oC
0,460oC
0,560oC
0,660oC
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
hitunglah titik didih dalam larutan glukosa 0,15 molal dalam air
100,888oC
100,188oC
100,076oC
101,076oC
110,076oC
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
suatu larutan berair mengandung senyawa nonvolatil 288 gram dengan komposisi stokiometri CnH2nOn dalam 90,0 gram air dan mendidih pada suhu 101,24oC pada tekanan 1,00 atm. bagaimanakah rumus molekul zat terlatur tersebut
C44H88 O44
C88H88 O44
C88H44 O44
C44H44 O88
C22H88 O44
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Hitunglah tekanan osmotik larutan gula 0,200M dalam suhu 270C jika R= 0,0821 L.atm/mol.K
5,39 atm
4,39 atm
4,93 atm
5,93 atm
3,99 atm
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Kedalam 250 gram air dilarutkan 17,4 gram K2SO4 apabila Kb air = 0,52oC/m hitunglah kenaikan titik didih larutan tersebut jika K = 39, S= 32, O=16)
0,2240C
0,3240C
0,4240C
0,5240C
0,6240C
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