
Ulangan harian buffer dan hidrolisis
Authored by Erika Nugroho
Chemistry
11th Grade
Used 15+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Pernyataan yang benar tentang larutan penyangga adalah ….
mempertahankan pH sistem agar tetap
memiliki komponen asam dan basa yang selalu berupa pasangan konjugasi
mampu mengatasi penambahan asam dan basa dalam jumlah banyak
pengenceran tidak mengubah konsentrasi ion H+ dan OH-
mampu mengubah pH secara signifikan
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
I dan II
II dan IV
III dan IV
III dan V
IV dan V
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pasangan larutan berikut ini yang menghasilkan larutan penyangga adalah ….
100 mL NH4OH 0,2 M + 100 mL HCl 0,1 M
100 mL NH4OH 0,2 M + 100 mL HCl 0,3 M
100 mL NaOH 0,2 M + 100 mL CH3COOH 0,2 M
100 mL NaOH 0,2 M + 100 mL HCN 0,1 M
100 mL NaOH 0,2 M + 100 mL HCN 0,2 M
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Ke dalam larutan basa lemah LOH ditambahkan padatan garam L2SO4 sehingga konsentrasi larutan LOH menjadi 0,2 M dan konsentrasi L2SO4 0,05 M. Bila Kb basa LOH = 10-5 maka pH campuran adalah…
11 + log 1
9 + log 2
9 + log 4
5 - log 2
5 - log 4
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Berapakah massa garam dari suatu campuran buffer terdiri dari HCOONa (Mr = 68) dan larutan HCOOH 0,1 mol memiliki pH = 4 ?
0,068 g
0,34 g
0,68 g
3,4 g
6,8 g
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Harga pH campuran antara 100 ml larutan C6H5COOH 0,3 M dengan 100 ml larutan NaOH 0,1 M jika diketahui Ka C6H5COOH = 6 x 10-5 adalah ....
5 - log 6
5 - log 12
6 - log 5
6 - log 12
5 + log 12
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Larutan 100 mL CH3COOH 0,15 M dicampurkan dengan 50 mL larutan KOH 0,2 M (Ka= 1x10-5), maka pH campuran larutan tersebut adalah ....
3 - log 5
5 - log 2
5 - log 6
6 - log 5
8 + log 5
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