
Kuis Kimia 5
Authored by Ir S
Chemistry
12th Grade
Used 1+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Pada pembakaran 570 gram isooktana (C8H18), salah satu komponen yang ada dalam bensin, pada keadaan standar/STP dibebaskan kalor sebesar 27.500 kJ. Besarnya entalpi pembakaran standar pada reaksi pembakaran isooktana tersebut adalah..... (Mr C8H18 = 114)
-5.500 kJ/mol
5.500 kJ/mol
-5.650 kJ/mol
5.650 kJ/mol
-5.850 kJ/mol
2.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Jika Ka CH3COOH = 10, maka pH larutan CH3COONa 0,9 M adalah....
5
9
5 - log 2
9 + log 3
8 + log 2
3.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Berapakah molaritas suatu larutan yang dibuat dengan melarutkan 8 gram kalsium Bromida (CaBr2) dalam air untuk memperoleh 100 mL larutan (Mr CaBr2 = 200)
0,2 M
0,3 M
0,4 M
0,5 M
0,6 M
4.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Tekanan uap air pada suhu 30°C adalah 20 mmHg apabila ke dalam 900 gram air di larutkan 0,6 gram urea (Mr = 60) berapa penurunan tekanan uap larutan tersebut.....
0,0035 mmHg
0,0036 mmHg
0,0037 mmHg
0,0038 mmHg
0,0039 mmHg
5.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Yang terjadi pada reaksi eksoterm adalah...
Energi sistem bertambah
ΔΗ positif
Sistem memerlukan kalor
Lingkungan menerima kalor dari sistem
Entalpi sistem naik
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