
larutan penyangga
Authored by miftakhul jannah
Chemistry
11th Grade
Used 74+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Pasangan reaksi yang menghasilkan campuran penyangga, adalah ….
(Ka CH3COOH=1,75 x 10-5)
50 mL CH3COOH 0,2 M dengan 50 mL larutan NaOH 0,2 M
10 mL CH3COOH 0,1 M dengan 10 mL CH3COONH4 0,05 M
10 mL CH3COOH 0,1 M dengan 10 mL Ca(OH)2 0,05 M
30 mL CH3COOH 0,1 M dengan 40 mL KOH 0,05 M
50 mL CH3COOH 0,05 M dengan 50 mL Ba(OH)2 0,03 M
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Pasangan senyawa dibawah ini :
(1) HCO3- dengan Na2CO3
(2) HF dengan KF
(3) HPO42- dengan Na3PO4
(4) HNO2 dengan NaNO2
yang merupakan campuran penyangga adalah ….
1, 2, 3
1, 3
2, 4
4 saja
semua benar
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Terdapat beberapa larutan berikut:
(1) 25 mL NaOH 0,1 M;
(2) 25 mL HCN 0,2 M;
(3) 25 mL CH3COOH 0,1 M;
(4) 25 mL NH4OH 0,2 M; dan
(5) 25 mL HCl 0,2 M.
Pasangan senyawa yang dapat membentuk larutan penyangga adalah ....
(1) dan (2)
(1) dan (3)
(2) dan (4)
(3) dan (4)
(4) dan (5)
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Jika larutan buffer yang mengandung 0,4 mol NH4OH dan 0,2 mol NH4Cl ditambahkan ke dalamnya 100 mL HCl 1M, maka besarnya pH akhir campuran adalah ….(Kb NH4OH=10-5)
5
6 + log 5
8
8 + log 5
9
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Campuran larutan yang tepat untuk mendapatkan larutan penyangga dengan pH = 5, adalah:
10 mL NaOH 0,1 M + 5 mL CH3COOH 0,1 (Ka = 10-5)
10 mL NaOH 0,1 M + 10 mLCH3COOH 0,1 M (Ka = 10-5)
10 mL NaOH 0,1 M + 20 mLCH3COOH 0,1 M (Ka = 10-5)
20 mL NaOH 0,1 M + 20 mLCH3COOH 0,1 M (Ka = 10-5)
20 mL NaOH 0,1 M + 10 mLCH3COOH 0,1 M (Ka = 10-5)
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Pasangan senyawa di bawah ini merupakan campuran penyangga, KECUALI ….
CH3COOH dengan CH3COONa
NaH2PO4 dengan Na2HPO4
HF dengan BaF2
NH3(aq) dengan (NH4)2SO4
HCN dengan NH4CN
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dalam tubuh manusia terdapat ion-ion penyetabil pH dalam darah, ion-ion ini yang dimaksud adalah….
H2CO3 dan HCO3-
H3PO4 dan H2PO4-
CH3COOH dan CH3COO-
HCN dan CN-
HF dan F-
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