
Kuis Kimia 6
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
Suatu larutan mengandung garam-garam Pb(NO3)2, Mn(NO3)2, dan Zn(NO3)2, masing-masing mempunyai konsentrasi 0,01 M. Pada larutan ini dilarutkan sejumlah NaOH padat hingga larutan mempunyai pH 8. Berdasarkan data Ksp berikut:
Pb(OH)2 = 2,8 . 10-16
Mn(OH)2 = 4,5 . 10-14
Zn(OH)2 = 4,5 . 10-17
Senyawa hidroksida yang mengendap dalam larutan adalah…..
Zn(OH)2
Mn(OH)2
Zn(OH)2 dan Pb(OH)2
Ketiga-tiganya
Tidak ada
2.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Berapa gram kalsium yang dapat dihasilkan dari elektrolisis lelehan CaCl2 dengan elektroda grafit selama satu jam jika digunakan arus 10 A? (Ar Ca = 40)
5,46
6,46
7,46
8,46
9,46
3.
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
4.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Suatu larutan dibuat dengan cara melarutkkan 3 gram urea CO(NH2)2 dalam 100 gram air (Kb air = 0,52˚C/m, Tb˚ = 100˚C, Ar C = 12, O = 16, N = 14, H =1). Berapa besarnya titik didih larutan urea tersebut…..
90,26˚C
90,56˚C
95,26˚C
100,26˚C
100,76˚C
5.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Arus listrik 5A diberikan kedalam larutan kromium (III) nitrat selama 30 menit. Berapa gram massa logam kromium akan terendapkan pada katoda? (Ar kromium = 52)
0,62 gram
1,62 gram
3,26 gram
4,26 gram
6,26 gram
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