HIDROLISIS 5
Quiz
•
Chemistry
•
11th Grade
•
Hard
sri suernik
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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Hitunglah pH larutan CH3COONH4 0,1 M jika diketahui Ka CH3COOH = 10-10 dan Kb NH3 = 10-8 !
4
7
8
10
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Jika 50 mL larutan KOH 0,5 M dicampur dengan 50 mL larutan CH3COOH 0,5 M. Hitung pH campuran yang terjadi (Ka CH3COOH = 10-4) !
6 - log 5
5,5 - log 5
8 + log 5
8,5 + log 5
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Harga pH campuran dari 50 mL larutan NH3 0,2 M dan 50 mL larutan HCl 0,2 M adalah … (Kb NH3 = 10–5)
4
5
6
9
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Barium asetat, Ba(CH3COO)2 seberat 2,55 gram dilarutkan dalam air sampai volumenya menjadi 250 cm3.
Bila Ka CH3COOH = 10–5.
Maka pH larutan adalah ….
(Ar Ba = 137; C = 12; dan O = 16)
5,5 - log 2
5 - log 2
8,5 + log 2
8 + log 2
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
3.Sebanyak 250 mL larutan CH3COOH 0,2 M dicampur dengan 250 mL NaOH 0,2 M, membentuk suatu garam sesuai dengan reaksi :
CH3COOH(aq) + NaOH(aq) ==> CH3COONa(aq) + H2O(l)
(Ka = 1 10-9). pH campuran tersebut adalah . . . .
A. 3
B. 5
C. 9
D. 10
E. 11
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
4.Diantara larutan berikut yang dapat membentuk larutan garam terhidrolisis sebagaian dan bersifat asam adalah....
A. 20 mL CH3COOH 0,1 M + 20 mL KOH 0,2 M
B. 20 mL H2SO4 0,1 M + 20 mL Ba(OH)2 0,1 M
C. 20 mL Ca(OH)2 0,1 M + 20 mL HCl 0,1 M
D. 20 mL NH4OH 0,1 M + 20 mL HCl 0,1 M
E. 20 mL HCN 0,1 M + 20 mL NaOH 0,1 M
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
6.Sebanyak p gram CH3COONa dilarutkan dalam satu liter air menurut persamaan reaksi :
CH3COO- + H2O ==> CH3COOH + OH-
Jika Ka CH3COOH = 1 x10^-5 dan pH larutan yang terbentuk sebesar 9, maka banyaknya p garam yang harus dilarutkan adalah . . . .g (Ar C = 12, O= 16, H = 1 dan Na= 23)
A. 0.82
B. 1.64
C. 8.20
D. 6.4
E. 18.6
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