STOIKIOMETRI LARUTAN
Quiz
•
Chemistry
•
10th - 12th Grade
•
Hard
Christina Nopriani
Used 34+ times
FREE Resource
30 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Diketahui persamaan reaksi:
C (s) + 2 H2 (g) --> CH4 (g)
Jika sejumlah karbon tepat bereaksi dengan 2,24 L gas H2 pada STP, jumlah partikel gas CH4 yang dihasilkan adalah ... molekul.
3,01 x 1020
3,01 x 1021
3,01 x 1022
6,02 x 1024
12,04 x 1024
2.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Sebanyak 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
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Senyawa hidrat yang terbentuk dari
73,42% amonium phospat dan 26,58% air adalah ....
(Ar H = 1; N = 14; O = 16; P= 31)
Amonium phosfat hidrat
Amonium phospat trihidrat
Amonium phospat tetrahidrat
Amonium phospat pentahidrat
Amonium phospat heptahidrat
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Berapa gram FeS2 (Mr = 120) yang kemurniannya 90% harus dibakar untuk memperoleh 2,24 liter SO2 (0°C, 1 atm) berdasarkan reaksi :
4FeS2(s) + 11O2(g) → 2Fe2O3(s) + 8 SO2(g)
5,4 gram
6,0 gram
6,7 gram
12,0 gram
21,6 gram
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Larutan perak nitrat bereaksi dengan larutan seng klorida menurut reaksi
2AgNO3(aq) + ZnCl2(aq) → 2AgCl(s) + Zn(NO3)2(aq)
Maka volume larutan ZnCl2 1 M yang diperlukan untuk menghasilkan AgCl sebanyak 14,35 gram adalah ….
(Ar : Ag = 108, N = 14, O = 16, Cl = 35,5, Zn = 65)
1000 cm³
500 cm³
250 cm³
100 cm³
50 cm³
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Prosentase terbanyak dari unsur nitrogen terdapat pada pupuk ….
CO(NH2)2
(NH4)2 SO4
NaNO3
NH4NO3
Ca(NO3)2
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Seng mempunyai dua isotop yaitu 66Zn30 dan 65Zn30. Bila Ar Zn = 65,4 maka perbandingan persentase 66Zn30 dan 65Zn30 adalah ….
80 : 20
75 : 25
40 : 60
50 : 50
30 : 70
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