Tampaknya Remidi Buffer
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Medium
Wahyudi Kim
Used 12+ times
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25 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Adanya penambahan sedikit air ke dalam larutan penyangga akan menyebabkan ...
bertambahnya pH dan pKa larutan
bertambahnya pH tetapi pKa larutan tetap
berkurangnya pH tetapi pKa larutan tetap
berkurangnya pH dan bertambahnya pKa larutan
pH dan pKa larutan konstan
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Diketahui larutan:
1. CH3COOH dan CH3COONa
2. HCl dan NaCl
3. NH3 dan NH4Cl
4. NaOH dan NH3
5. KOH dan KCl
Pasangan yang termasuk larutan penyangga adalah ...
1 dan 2
1 dan 3
2 dan 3
3 dan 4
4 dan 5
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Perbandingan volume dari campuran larutan CH3COOH 0,1 M dan larutan NaOH 0,1 M, agar menghasilkan larutan penyangga dengan pH = 5 adalah ... (Ka CH3COOH = 1 x 10-5)
1 : 1
2 : 1
1 : 2
2 : 3
3 : 2
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Campuran berikut yang membentuk larutan penyangga adalah ...
50 mL NaOH 0,2 M dan 50 mL CH3COOH 0,1 M
35 mL NaOH 0,2 M dan 70 mL NH3(aq) 0,1 M
40 mL NaOH 0,1 M dan 60 mL NH3(aq) 0,1 M
50 mL NaOH 0,1 M dan 50 mL CH3COOH 0,2 M
50 mL NaOH 0,2 M dan 70 mL CH3COOH 0,1 M
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebanyak 200 mL larutan HCOOH 0,1 M direaksikan dengan 50 mL larutan NaOH 0,2 M. Jika Ka HCOOH = 2 x 10-4 dan log 2 = 0,3, maka pH setelah reaksi adalah ...
5,3
4,7
4,3
3,7
2,7
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Berdasarkan data perubahan pH larutan di atas larutan yang mempunyai sifat penyangga adalah ...
P
Q
R
S
T
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Di laboratorium tersedia 200 mL larutan NH4OH 0,2 M dan HCl 0,1 M. Untuk membuat larutan penyangga dengan pH = 9, volum HCl yang harus ditambahkan adalah ... mL (Kb NH4OH = 10-5)
50
100
200
250
500
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