
KSN KIMIA 2023

Quiz
•
Chemistry
•
10th - 12th Grade
•
Hard
Putri Sari
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ion perak dalam perak oksalat (Ag2C2O4) memiliki konfigurasi elektron (keadaan dasar) yang sama dengan….
In3+
Kr
Pd2+
Au+
Cd
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dari keempat senyawa berikut, urutan senyawa yang memiliki panjang ikatan dari yang terpendek ke terpanjang adalah ….
H2O < CH4 < NH3 < HF
HF < H2O < NH3 < CH4
HF < H2O < CH4 < NH3
CH4 < NH3 < HF < H2O
CH4 < NH3 < H2O < HF
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Di antara keempat molekul di bawah ini, manakah yang memiliki ikatan hidrogen dalam interaksi antarmolekulnya?
i. CHF3 (trifluorometana)
ii. C6H12O6 (glukosa)
iii. C6H3F3 (trifluorobenzena)
iv. CCl3COOH (asam trikloroasetat
i, ii, dan iii
iv saja
ii, iii, dan iv
ii dan iv
semua benar
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Analisis kuantitatif untuk menentukan kadar senyawa tetraetiltiuran disulfida (C10H20N2S4) dapat dilakukan dengan mengoksidasi sulfur menjadi SO2. SO2 kemudian dibubbling dalam larutan H2O2 hingga terbentuk H2SO4. Asam sulfat yang terbentuk dapat bereaksi dengan NaOH sebagai berikut:
H2SO4 (aq) + 2NaOH(aq) → Na2SO4(aq) + 2H2O(l)
Jika H2SO4 yang terbentuk membutuhkan 34,85 mL NaOH 0,025 M untuk bereaksi, kadar C10H20N2S4 dalam 0,4605 g sampel adalah …. (%b/b)
7,00
8,75
10,15
12,00
17,50
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hukum laju reaksi tersebut adalah….
r = k[A][B]2
r = k[A][B]
r = k[A]2[B]
r = k[A]2
r = k[B]2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tetapan laju reaksi tersebut adalah….
k = 0,072 M–1 s–1
k = 0,056 M–1 s–1
k = 0,108 M–1 s–1
k = 0,042 M–1 s–1
k = 0,129 M–1 s–1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Reaksi A → 2B memiliki tetapan laju reaksi sebesar 0,012 s–1.
Jika konsentrasi awal A adalah 0,56 M, konsentrasi B setelah reaksi berlangsung 45 detik adalah ….
0,326 M
0,020 M
0,467 M
0,430 M
0,260 M
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