
larutan penyangga (11 IPA 3)
Quiz
•
Chemistry
•
2nd Grade
•
Medium
Anik Rahmawati
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10 questions
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1.
MULTIPLE CHOICE QUESTION
3 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
2.
MULTIPLE CHOICE QUESTION
3 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)
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Diberikan campuran dari beberapa larutan sebagai berikut:
(1) 200 mL CH3COOH 0,1 M dan 200 mL NaOH 0,1 M
(2) 200 mL CH3COOH 0,2 M dan 200 mL NaOH 0,1 M
(3) 200 mL NH4OH 0,1 M dan 200 mL HCl 0,1 M
(4) 200 mL NH4OH 0,1 M dan 200 mL HCl 0,05 M
Campuran yang membentuk larutan penyangga adalah...
1, 2, dan 3
1 dan 3
2 dan 4
4
1, 2, 3, dan 4
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebanyak 100 mLnlarutan CH3COOH 0.2 M dicampur dengan 100 mL larutan NaOH 0.1 M. Jika Ka CH3COOH = 1 x 10^-5, pH larutan setelah dicampurkan adalah. . . . .
2
4
5
6
9
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Tentukan pH larutan jika 800 ml larutan CH3COOH 0,1M dicampur dengan 400ml larutan CH3COONa 0,1M (Ka CH3COOH = 1,8×10-5) !
4 – log 3,2
4 – log 4,2
5 – log 4,2
5 – log 3,2
3-log 4,5
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Tentukan pH larutan apabila 400 ml larutan NH4OH 0,5M dicampur dengan 100 ml larutan NH4Cl 0,5M ( Kb NH4OH = 1,8×10-5)
9 – log 7,2
9 + log 7,2
8 + log 7,2
8 – log 7,2
7- log 9,1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pernyataan tentang larutan penyangga yang paling tepat adalah ....
pH larutan penyangga tidak mungkin berubah oleh penambahan asam dan basa
Larutan penyangga dapat dibuat dari campuran garam dengan basa kuat berlebihan
Larutan penyangga dapat dibuat dari campuran garam dengan asam kuat berlebihan
Larutan penyangga dapat dibuat dari campuran larutan asam lemah dengan basa konjugasinya
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