Soal Larutan Penyangga
Quiz
•
Chemistry
•
11th Grade
•
Easy
Riska Harahap
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5 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Pernyataan yang benar tentang larutan penyangga adalah...
Memiliki komponen asam dan basa yang selalu berupa pasangan konjugasi
Mempertahankan pH sistem agar tetap
Mampu mengatasi penambahan asam dan basa dalam jumlah banyak
Pengenceran tidak mengubah konsentrasi ion H+ dan OH–
2.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Larutan penyangga dapat dibuat dengan campuran dari...
Asam Lemah dan Basa lemah
Asam Kuat dan Basa Konjugasinya
Asam Lemah dan Basa konjugasinya
Basa Kuat dan Asam Konjugasinya
3.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
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)
(2) dan (4)
(4) dan (5)
(1) dan (3)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika 100 ml larutan CH3COOH 0,02 M dicampurkan dengan 50 ml CH3COONa 0,1 M (Ka CH3COOH = 10-5), maka pH campuran adalah…
4 - log 6
4 - log 5
5 - log 4
6 - log 4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Masyarakat suku karo mempercayai bahwa menyirih dapat menyegarkan mulut dan menguatkan gigi. Didalam mulut terjadi sistem larutan penyangga ketika kandungan sirih (basa kuat) bereaksi dengan air liur yang mengandung larutan penyangga, maka akan terjadi reaksi : Ca(OH)2 (s) + NaH2PO4 (aq) → CaHPO4 (s) + NaOH (aq) + H2O (l)
dari reaksi tersebut kandungan larutan penyangga fosfat yang terdapat dalam air liur adalah....
H2PO4-
H3PO4
Ca(OH)2
CaHPO4
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