Hitunglah pH larutan:
a. CH3COONa 1 M (Ka CH3COOH = 1 × 10 )
b. CH3COONH4 0,1 M (Ka CH3COOH = 1 × 10 ;
Kb NH3 = 1 × 10 )
Latihan soal Hidrolisis dan Buffer
Quiz
•
Chemistry
•
11th Grade
•
Easy
Sekbid 2
Used 1+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hitunglah pH larutan:
a. CH3COONa 1 M (Ka CH3COOH = 1 × 10 )
b. CH3COONH4 0,1 M (Ka CH3COOH = 1 × 10 ;
Kb NH3 = 1 × 10 )
a. 9.5
b. 7
a. 4.5
b. 14
a. 5
b. 6
a. 9
b. 7
Answer explanation
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
100 mL CHCOOH 0,1 M dengan 100 mL NaOH 0,1 M
(Ka CH3COOH = 1 × 10 ). Hitunglah pH campuran!
8,5 + log √5
5,5 - log 2,23
8,5 + log 2,23
5,5 - log √5
5
Answer explanation
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
200 mL NH: 0,3 M dengan 300 mL HCl 0,2 M
(Kb NH3 = 1 × 10 ). Hitunglah pH campuran!1
5 + log √1,12
9 + log √1,12
5 - log √1,12
5 - log √2
10 - log √1,12
Answer explanation
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Berapa gram NH4Cl yang terlarut dalam 200 mL
larutan NH4Cl dengan pH = 4? (N = 14, H = 1; Cl = 35,5 ;
Kb NH3 = 1 x 10 )
1.07 gr
107 gr
101 gr
1,01 gr
10,7 gr
Answer explanation
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hitunglah pH dari CH3COONH4 0,1 M. Jika diketahui
Ka = 10 dan Kb NH3 = 10 .
8,5
7
9,5
- 8,5
Answer explanation
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suatu larutan yang mengandung 0,1 mol asam asetat
(Ka = 10-5) dan 0,01 mol natrium asetat mempunyai pH...
3
5
4
6
Answer explanation
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ke dalam larutan basa lemah LOH ditambahkan padatan
garam L2SO4 sehingga konsentrasi larutan LOH menjadi
0,1 M dan konsentrasi L2SO4 0,05 M.
Bila Kb LOH = 10-5 maka pH campuran adalah
5
9
5 - log 2
9 + log 2
Answer explanation
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