
STOKIOMETRI
Authored by Winarsih S.Pd
Chemistry
11th Grade
Used 32+ times

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16 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Pada reaksi pembakaran etana:
C2H6(g) + 7O2(g) → 4 CO2(g) + 6 H2O(g)
Pernyataan yang benar tentang persamaan reaksi tersebut adalah ….
Gas karbondioksida disebut pereaksi
2 molekul gas etana merupakan hasil reaksi
Angka 7 di depan O2 disebut indeks reaksi
Persamaan reaksi tersebut belum setara
Gas karbondioksida dan uap air meripakan hasil reaksi
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Bahan bakar gas elpiji merupakan bahan bakar yang ramah lingkungan dan efisien dibandungkan bahan bakar minyak tanah. Hasil reaksi yang terjadi pada pembakaran gas elpiji (C3H8) adalah gas karbon dioksida dan uap air.
Persamaan reaksi yang tepat dan setara adalah ….
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Perhatikan reaksi pembakaran gas metana berikut: CH4(g) + O2(g) → CO2 (g) + H2O(g) (reaksi belum setara)
Perbandingan volume gas-gas yang bereaksi dan volume gas-gas hasil eaksi berturut-turut adalah ….
1:1:2:2
1:2:1:1
1:2:2:1
1:1:2:1
1 : 2 : 1 :2
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Gas nitrogen direaksikan dengan gas oksigen menghasilkan gas dinitogen trioksida sesuai persaaan reaksi:
N2(g) + O2(g) → N2O3(g)
Jika volume gas diukur pada suhu dan tekanan yang sama, perbandingan volume N2 : O2 adalah ….
2 : 5
2 : 3
2 : 1
1 : 2
1 : 1
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Belerang bersifat mudah terbakar dan menghasilkan gas belerang dioksida (SO2). Gas ini dapat menyesakkan pernapasan dan menimbulkan gejala batuk. Dalam jumlah besar, gas ini dapat merusak paru-paru bahkan menyebabkan kematian. Di udara gas SO2 dapat teeroksidasi menjadi belerang trioksida, menurut reaksi : 2 SO2 (s)+ O2(g) → 2 SO3(g) .
Juka sebanyak 10 liter gas sulfur dioksida yang teroksidasi, volume gas belerang trioksida yang dihasilkan pada P dan T yang sama adalah …. liter.
1
3
5
7
10
6.
MULTIPLE CHOICE QUESTION
5 mins • 2 pts
Sebanyak 8 gram gas metana (CH4) bereaksi dengan oksigen menurut pesamaan reaksi :
CH4(g) + O2(g) → CO2(g) + H2O(g) ( reaksi belum setara).
Massa gas CO2 yang dihasikan adalah … gram. (Ar: C = 12 g mol-1 ,H = 1 g mol-1 , O = 16 g mol-1)
7
20
22
36
44
7.
MULTIPLE CHOICE QUESTION
5 mins • 3 pts
Diketahui reaksi: 2 H2(g) + O2(g) → 2 H2O(g) .
Jika 2 gram gas hidrogen bereaksi dengan 8 gram gas oksigen, uap air yang dihasilkan adalah … gram.
(Ar: H = 1 g mol-1 , O = 16 g mol-1)
6
9
10
15
18
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