
Ujian Sekolah Kelas XII
Quiz
•
Chemistry
•
12th Grade
•
Hard
VIA SUDHARYANI
Used 2+ times
FREE Resource
40 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Perhatikan ciri sifat senyawa berikut.
(1) Beracun dan korosif,
(2) Kristal putih dan Higroskopis,
(3) Digunakan sebagai indikator,
(4) Mudah menguap dan bersifat iritasi,
(5) Terkena kulit menyebabkan luka bakar.
Yang merupakan ciri dari natrium hidroksida ditunjukkan oleh nomor
(1), (2), dan (3)
(1), (2), dan (5)
(2), (3), dan (4)
(2), (4), dan (5)
(3), (4), dan (5)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Atom Y dengan elektron terakhir memiliki bilangan kuantum n= 3, l = 2, m= -1, dan s = -½, maka letak unsur Y pada sistem periodik unsur berada pada…
Golongan IVA dan periode 4
Golongan VA dan periode 4
Golongan VB dan periode 4
Golongan VIIB dan periode 4
Golongan VB dan periode 5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suatu isotop dialam memiliki neutron 45 dan nomor massa 80. Keempat bilangan kuantum elektron dari unsur tersebut adalah …
n = 3, l = 0, m = 0, s = - ½
n = 3, l = 1, m = 0, s = +½
n = 3, l = 2, m = +2, s = −½
n = 4, l = 0, m = 0, s = + ½
n = 4, l = 1, m = 0, s = - ½
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Unsur Nitrogen dapat bereaksi dengan unsur oksigen membentuk beberapa jenis senyawa oksida. Rumus kimia dinitrogen pentaoksida adalah …
N2O3
N2O5
N3O2
N5O
N2O
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Di antara beberapa reaksi berikut, yang menunjukkan persamaan reaksi setara dan benar adalah …
Al(s) + HCl(aq) → AlCl3(aq) + H2(g)
CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)
Al(s) + 3H2SO4(aq) → Al2(SO4)3(aq) + 3H2(g)
Fe2O3(s) + H2SO4(aq) → Fe2(SO4)3(aq) + H2O(g)
Cu(s) + HNO3(aq) → Cu(NO3)2 (aq) + NO(g) + H2O(g)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Reaksi pencampuran 100 mL larutan Na2CO3 0,4 M dengan 400 mL larutan HCl 0,3 M berlangsung menurut reaksi berikut.
Na2CO3(aq) + HCl(aq) → NaCl(aq) + H2O(l) + CO2(g) (belum setara)
Volume gas yang dihasilkan diukur pada P dan T yang sama 2,56 g gas oksigen dengan volume 16 L adalah … (Ar O = 16)
8 Liter
4 Liter
2 Liter
0,8 Liter
0,4 Liter
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suatu larutan sebanyak 500 gram mengandung 37% Ca(OH)₂. Fraksi mol dan molalitas larutan tersebut berturut-turut adalah … (Mr Ca(OH)₂ = 74 g/mol)
0,13 dan 3,97 m
0,13 dan 7,94 m
0,25 dan 7,94 m
0,25 dan 15,87 m
0,50 dan 3,97 m
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