Ulangan Harian I Kimia XII MIPA
Quiz
•
Chemistry
•
12th Grade - University
•
Practice Problem
•
Easy
Felix Alexander Simorangkir
Used 9+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Kemolalan larutan NaCl 10 % massa dalam air adalah..... molal (Mr NaCl = 58,51)
1,5
1,7
1,9
2,1
2,3
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Massa Jenis H2SO4 (Mr = 98)pekat 49 % m/m adalah 1,3 Kg/L. Untuk memperoleh 260 mL H2SO4 0,05 M diperlukan H2SO4 pekat sebanyak..... mL
6
5
4
3
2
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Fraksi mol suatu larutan etanol C2H5OH dalam air adalah 0,25. Maka konsentrasi etanol dalam larutan ini jika dinyatakan dalam satuan persen massa adalah.... (Ar H = 1 ; C = 12 ; O = 16)
23
46
50
75
90
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Tekanan uap air murni pada suhu 30 oC adalah 31,8 mmHg. tekanan uap jenuh larutan yang dibuat dengan melarutkan 1 mol Na2SO4 dalam 900 gram air pada suhu yang sama adalah..... (Ar H = 1 ; O = 16)
24
25
28
29
30
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Suatu senyawa non-elektrolit tersusun dari 40 % Karbon, 6,6 % Hidrogen dan sisanya Oksigen, Jika 45 gram senyawa ini dilarutkan dalam 100 mL air (Kb = 0,5 ; ρ air = 1 g/mL) dan larutan mendidih pada suhu 102,5 derajat Celsius. Maka rumus molekul senyawa tersebut adalah..... (Ar H = 1 ; C = 12 ; O = 16)
C2H2O4
C2H4O2
C3H6O3
C4H10O2
C4H8O4
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Tetapan kenaikan titik didih molal air adalah 0,52. Larutan A dibuat dengan melarutkan 10,3 gram NaBr (Mr = 103) ke dalam 500 gram air dan Larutan B dibuat dengan melarutkan 5,55 gram CaCl2 (Mr = 111) ke dalam 500 gram air. Kedua senyawa tersebut terionisasi sempurna dalam air. Perbandingan ∆Tb larutan A terhadap ∆Tb larutan B adalah.....
1/3
2/3
4/3
3/2
2/1
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Gula 0,2 mol (zat non elektrolit) dan 0,2 mol garam MX dengan derajat ionisasi 0,5 masing-masing dilarutkan dalam 1 liter air (ρ = 1 g/mL). Jika penurunan titik beku larutan gula adalah T oC. maka penurunan titik beku larutan Garam MX adalah..... oC
0.25 T
0.5 T
0.75 T
1.5 T
1.75 T
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