Ana larutan penyangga_1

Quiz
•
Chemistry
•
2nd Grade
•
Hard
ana kimia
Used 2+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Campuran dibawah ini yang bukan larutan penyangga adalah....
NH4OH dan NH4Cl
CH3COOH dan CH3COONa
Ca(OH)2 dan CaCl2
HCN dan KCN
H2CO3 dan NH4+
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Penambahan sedikit HCl ke dalam campuran NH4OH dan NH4Cl tidak mempengaruhi pH karena...
akan menambah [H+]
akan mengurangi [OH-]
HCl bereaksi dengan NH4OH
[NH4Cl] berkurang banyak
[NH4OH] bertambah banyak
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pernyataan yang benar tentang larutan penyangga adalah...
pH-nya tidak berubah jika di tambah sedikit asam atau basa
pH-nya akan berubah jika diencerkan
dapat menahan berbagai reaksi
mempertahankan harga kelarutan zat
dapat menahan terjadinya ionisasi
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Di antara campuran di bawah ini yang membentuk larutan penyangga dengan pH > 7 adalah ...
NH4OH dN NH4Cl
CH3COOH dan CH3COONa
H2S dan Ca(HS)2
HCN dan KCN
H2CO3 dan KHCO3
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Campuran berikut ini yang dapat membentuk larutan penyangga adalah...
100 mL NaOH 0,1M + 100 mL HCl 0,1M
100 mL NaOH 0,1M + 100 mL NaCN 0,1M
100 mL NaCN 0,1M + 100 mL HCN 0,1M
100 mL NH4OH 0,1M + 50 mL H2SO4 0,1M
100 mL K2SO4 0,1M + 50 mL H2SO4 0,1M
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Penambahan sedikit air dalam larutan penyangga akan menyebabkan ...
pH larutan berubah
pKa larutan berubah
pH larutan berubah, pKa tetap
pKa larutan berubah, pH tetap
pH dan pKa tidak berubah
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Dalam 2 liter larutan terdapat 0,2 mol amonium hidroksida dan 0,4 mol amonium klorida. Jika Kb NH4OH = 2 x 10^-5. pH larutan tersebut adalah ....
5 - log 4
5
9
9 + log 4
10 + log 4
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