
PH stoikiometri 2
Authored by Lina Yohana
Science, Chemistry
10th Grade
Used 2+ times

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11 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
angka koefisien reaksi menyatakan perbandingan
a) massa zat yang bereaksi
b) volume gas-gas yang bereaksi
c)mol zat yang bereaksi
d)molekul zat yang bereaksi
a,b,c,d
a,b,c
a,b,d
a,c,d
b,c,d
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
"Dalam sistem tertutup, Massa zat sebelum dan sesudah reaksi akan tetap". Pernyataan tersebut merupakan bunyi hukum?
Hukum Kekekalan Massa
Hukum Perbandingan Tetap
Hukum Avogadro
Hukum Dalton
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Berapa massa molekul relatif (Mr) dari C2H5OH? Ar C= 12, O= 16, H= 1
45
46
29
36
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Berapa jumlah atom/partikel dari 0,5 mol atom Na ?
3,01 x 10^23
3,01 x 10^16
30,1 x 10^12
30,1 x 10^23
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Tetapan Avogadro : L = 6,02 x 1023 dan Ar : C = 12, O = 16, maka 22 gram gas karbon dioksida mengandung ….
1,32 x 1021 molekul
3,01 x 1021 molekul
6,02 x 1024 molekul
3,01 x 1023 molekul
6,02 x 1023 molekul
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Gas CO2 dialirkan ke dalam larutan jenuh Ca(OH)2 hingga terjadi reaksi :
Ca(OH)2 (aq) + CO2 (g) CaCO3 (s) + H2O (l)
Jika gas CO2 yang telah bereaksi sebanyak 0,1 mol, maka endapan CaCO3 yang terbentuk adalah ....
100 g
74 g
50 g
44 g
10 g
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Untuk pembakaran 4 mol gas butana secara
Sempurna menurut reaksi
C4H10 (g) + O2 (g) à CO2 (g) + H2O (g)
diperlukan gas oksigen sebanyak :
6,5 mol
8 mol
16 mol
26 mol
32 mol
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