
stoikiometri
Authored by Ika Virgowaty
Chemistry
9th - 12th Grade
Used 27+ times

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20 questions
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1.
MULTIPLE SELECT QUESTION
3 mins • 5 pts
Massa molekul relative (Mr) Ca3(PO4)2 adalah 310, dengan Ar Ca = 40, O = 16. Ar P adalah ….
31
51
56
62
63
2.
MULTIPLE SELECT QUESTION
3 mins • 5 pts
2 L gas propana (C3H8) dibakar dengan 12 L gas oksigen sehingga terbentuk CO2 dan H2O. Uap air kemudian diembunkan dan dievakuasi dari reaktor.
Pernyataan berikut ini yang tidak sesuai adalah … .
Propana berperan sebagai pereaksi pembatas
Terdapat 8 L air yang dievakuasi
2 L gas oksigen tidak bereaksi
Tidak ada sisa reaktan dalam reaksi
Gas CO2 yang dihasilkan sebanyak 6 L
3.
MULTIPLE SELECT QUESTION
3 mins • 5 pts
4 mol aluminium beraksi dengan 4 mol oksigen membentuk aluminium oksida seturut reaksi berikut.
4Al (s) +3O2 (g) → 2Al2O3 (s)
Pernyataan berikut yang benar adalah … .
(Ar Al = 27, O = 16)
Aluminium sebagai pereaksi pembatas
Oksigen sebagai reaksi pembatas
Dihasilkan 4 mol Al2O3
Tidak terjadi reaksi karena dibutuhkan 8 mol alumunium
Oksigen yang tidak bereaksi sebanyak 1 mol
4.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Jika pada keadaan standar volume dari 2,8 gram gas sebesar 2,24 liter, maka massa molekul relative (Mr) gas tersebut adalah ….
26
28
30
32
34
5.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Volume 8 gram gas oksigen (Ar O = 16) pada keadaan standar adalah ….
2,24 liter
2,8 liter
3,2 liter
5,6 liter
11,2 liter
6.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Jika Mr H2O = 18, berarti 18 gram H2O merupakan berat dari ….
1 liter H2O
1 dm3 H2O
1 ml H2O
1 mol H2O
1 molekul H2O
7.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Berapa massa molekul relatif (Mr) dari C2H5OH? Ar C= 12, O= 16, H= 1
45
46
29
36
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