UH II DAN III KIMIA KELAS XI

Quiz
•
Chemistry
•
10th Grade
•
Medium
dian maskat
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 10 pts
1. Larutan garam yang berasal dari asam lemah dan basa lemah akan bersifat asam, jika . . .
Ka > Kb
Ka < Kb
Kb > Ka
Ka = Kb
Kb > Ka
2.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Jika diketahui harga Ka CH3COOH = 1,8 x 10-5, maka tetapan hidrolisis CH3COONa adalah . . .
10-14
5,5 x 10-10
5,5 x 10-6
1,8 x 10-5
5,5 x 10-4
3.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Peristiwa hidrolisis TIDAK terjadi pada larutan. . .
NaCl
Ca(CH3COO)2
NH4CN
AlPO4
BaF2
4.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Jika diketahui Ka CH3COOH = 1 x 10-5 , pH larutan Ba(CH3COO)2 0,1 M adalah. . .
(Kw = 1 x 10-14)
5
5 + log 1,4
9
9 - log 1,4
9 + log 1,4
5.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
1. Perhatikan data berikut ini :
1. CH3COO- + H2O ↔ CH3COOH + OH-
2. PO43- + 3H2O ↔ H3PO4 + 3OH-
3. NH4+ + H2O ↔ NH4OH + H+
4. CN- + H2O ↔ HCN + OH-
5. Al3+ + 3H2O ↔ Al(OH)3 + 3H+
Pasangan persamaan reaksi hidrolisis yang bersifat basa adalah . . .
3 dan 5
2 dan 3
2 dan 5
1 dan 2
4 dan 5
6.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Pernyataan tentang defenisi larutan penyangga yang paling tepat adalah
Larutan yang mengalami perubahan pH bila ditambah asam maupun basa
Larutan yang mampu mengatasi penambahan asam dan basa dalam jumlah banyak
Larutan yang pengencerannya tidak mengubah konsentrasi ion H+
Larutan yang relatif mampu mempertahankan pH meski ditambah asam, basa, maupun diencerkan
Larutan yang memiliki komponen asam dan basa yang selalu berupa pasangan konjungsi
7.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
2. Perhatikan data percobaan berikut. Dari data tersebut yang termasuk larutan penyangga adalah....
I
II
III
IV
V
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