HIDROLISIS 5

HIDROLISIS 5

11th Grade

10 Qs

quiz-placeholder

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HIDROLISIS 5

HIDROLISIS 5

Assessment

Quiz

Chemistry

11th Grade

Hard

Created by

sri suernik

Used 2+ times

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10 questions

Show all answers

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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