
Tania 2
Authored by reny salim
Chemistry
11th Grade
Used 1+ times

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36 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 2 pts
Jika 32 gram cuplikan belerang dibakar sempurna menurut persamaan reaksi : S + O2 → SO3 (belum setara) dan menghasilkan 48 gram belerang trioksida. Kadar belerang dalam cuplikan adalah....(Ar S = 32, Ar O = 16)
30%
45%
60%
75%
100%
2.
MULTIPLE CHOICE QUESTION
15 mins • 2 pts
Sebanyak 4,48 L gas nitrogen bereaksi dengan 6,72 L gas oksigen menurut persamaan reaksi:
N2+3H2→ 2NH3 pada keadaan standar. Pernyataan yang benar adalah....
gas hidrogen sebagai pereaksi pembatas
mol H2 yang bereaksi sebesar 0,2 mol
gas N2 sebagai pereaksi pembatas
volume NH3 yang terbentuk sebesar 6,72 liter
Volume N2 yang habis bereaksi 0,2 mol
3.
MULTIPLE CHOICE QUESTION
15 mins • 2 pts
Sebanyak 4,8 gram serbuk Mg (Ar = 24)bereaksi dengan 0,2 L HCl 0,8 M menurut persamaan reaksi:
Mg + 2HCl→ MgCl2 + H2. Pernyataan yang benar adalah....(Ar Mg = 24, Cl = 35,5)
mol Mg yang bersisa 0,08 mol
mol HCl yang bereaksi sebesar 0,2 mol
massa MgCl2 yang terbentuk 7,6 gram
volume H2 yang terbentuk sebesar 4,48 liter pada STP
massa Mg yang bersisa sebesar 1,79 gram
4.
MULTIPLE CHOICE QUESTION
15 mins • 2 pts
Pembakaran 4,8 gram karbon dengan 13,44 liter gas oksigen keadaan standar menurut persamaan reaksi: C(s) + O2(g)→CO2(g). Volume gas karbondioksida yang terbentuk pada STP adalah....
4,48 liter
8,96 liter
13,44 liter
2,24 liter
11,2 liter
5.
MULTIPLE CHOICE QUESTION
15 mins • 2 pts
Sebanyak 21,35 gram senyawa hidrat tembaga hidrat dipanaskan hingga tersisa massanya 15,95 gram. Jumlah molekul air yang terkandung pada senyawa hidrat ini adalah....
(Ar Cu = 63,5; Ar S = 32, O = 16, H = 1)
1 molekul
2 molekul
3 molekul
4 molekul
5 molekul
6.
MULTIPLE CHOICE QUESTION
15 mins • 2 pts
Logam besi direaksikan dengan larutan asam klorida menurut persamaan reaksi:
Fe(s)+HCl →FeCl3(s) + H2(g). Jika 30,24 gram logam besi yang direaksikan menghasilkan 48,75 gram besi(III)klorida. Persen kemurnian logam besi tersebut adalah....(Ar Fe = 56, Cl = 35,5)
20,25%
30,15%
42,74%
55,56%
85,14%
7.
MULTIPLE CHOICE QUESTION
15 mins • 2 pts
Penentuan kadar karbon yang terdapat dalam gas elpiji dilakukan dengan membakar gas tersebut menurut persamaan reaksi : C(s) + O2(g) → CO2(g). Jika 60 gram elpiji dibakar dihasilkan 33,6 liter gas karbondioksida pada 00C, 1 atm. Kadar karbon dalam gas elpiji adalah....
30%
40%
50%
60%
70%
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