Assesment awal larutan penyangga
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Medium
Flora Ginting
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Larutan penyangga adalah larutan yang mampu mempertahankan pH pada kisarannya kecuali pada pengaruh ...
penambahan air 5 kali semula
penambahan sedikit asam lemah
penambahan sedikit asam kuat
penambahan banyak asam kuat
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Campuran larutan di bawah ini yang dapat membentuk campuran penyangga adalah ...
larutan HCl dengan larutan NH4Cl
larutan CH3COOH dengan larutan C2H5ONa
larutan Ca(OH)2 dengan larutan CaCl2
larutan HCOOH dengan larutan HCOONa
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Perhatikan pasangan larutan berikut ini :
1) 50 mL CH3COOH 0,2 M dan 50 mL NaOH 0,1 M
2) 50 mL CH3COOH 0,2 M dan 100 mL NaOH 0,1 M
3) 50 mL H2CO3 0,2 M dan 100 mL NH3 0,1 M
4) 50 mL HCl 0,1 M dan 50 mL NH3 0,2 M
5) 50 mL HCl 0,1 M dan 50 mL NaOH 0,2 M
Pasangan-pasangan yang pH-nya tidak akan berubah apabila ditambah sedikit larutan asam atau basa adalah ...
1 dan 2
1 dan 3
1 dan 4
2 dan 3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Untuk membuat larutan penyangga dengan pH = 9, maka ke dalam 40 mL larutan NH3 0,5 M (Kb = 10–5) harus ditambahkan larutan HCl 0,2 M sebanyak ...
10 mL
30 mL
40 mL
50 mL
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Yang akan terjadi jika kita menambahkan sedikit air pada larutan penyangga adalah ...
Perubahan pH larutan
tidak ada perubahan pH maupun pKa
perubahan pKa larutan asam
perubahan pKa tapi pH tetap
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebanyak 200 mL NH4OH 0,4 M (Kb = 10–5 M) dicampurkan dengan 200 mL HCl 0,2 M membentuk larutan penyangga dengan pH ...
5
9
10
11
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Larutan buffer dapat di buat dengan mencampurkan larutan – larutan ...
asam sulfat dan natrium sulfat
hidroksida dan ammonium klorida
natrium hidroksida dan natrium nitrat ammonium
asam asetat dan ammonium asetat
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