Sebanyak 100 mL larutan 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. . . . .

MGMP KIMIA

Quiz
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Chemistry
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Professional Development
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Medium
Siti Hajijah
Used 1+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
2
4
5
6
9
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diantara campuran di bawah ini termasuk larutan penyangga, kecuali ….
NH4OH dan NH4Cl
CH3COOH dan CH3COONa
Ca(OH)2 dan CaCl2
HCN dan KCN
H2CO3 dan KHCO3
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Direaksikan beberapa larutan seperti berikut.
(1) 100 ml asam asetat 0,1 M dan 100 ml NaOH 0,1 M
(2) 100 ml asam asetat 0,2 M dan 100 ml NaOH 0,1 M
(3) 100 ml asam klorida 0,1 M dan 100 ml NH4OH 0,1 M
(4) 100 ml asam klorida 0,05 M dan 100 ml NH4OH 0,1 M
Campuran di atas yang membentuk larutan penyangga adalah
(1), (2), dan (3)
(1) dan (3)
(2) dan (4)
(4)
semua larutan
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Garam berikut ini yang berasal dari asam lemah dan basa kuat adalah ...
amonium asetat
amonium klorida
natrium asetat
natrium klorida
kalium klorida
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dalam cairan tubuh manusia yakni cairan intra sel dan ekstra sel. Komponen yang berfungsi sebagai penyangga di dalam tubuh manusia adalah...........
H2PO4- dan HPO42-.
H2PO4-
HPO42-
HPO42- dan H2O
H2PO4- dan H2O
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
5 mins • 1 pt
Tentukan pH larutan yang terjadi jika 200 mL asam asetat 0,4 M dengan 100 mL larutan NaOH 0,4 M dengan Ka asam asetat = 10-5 !
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