UJikom Kimia 4 kelas XI
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Hard
Ika Yudiswastika
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Berikut ini yang merupakan contoh asam kuat adalah....
asam klorida dan asam sulfat
asam klorida dan asam askorbat
asam askorbat dan asam benzoat
asam askorbat dan asam sulfat
asam format dan asam asetat
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Nilai derajat ionisasi basa lemah dengan konsentrasi 0,01 M dan pH = 11 + log 5 adalah ....
0,15
0,25
0,35
0,40
0,50
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diketahui beberapa asam lemah dengan harga Ka nya masing-masing Ka (HA) = 1,8.10-4; Ka (HB) = 1,8.10-5; Ka (HC) = 6,5.10-4. Urutan penurunan kekuatan asam di atas adalah ....
HA, HB, HC
HA, HC, HB
HC, HA, HB
HC, HB, HA
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Asam lemah HX 0.2 M mempunyai nilai pOH = 9, maka nilai tetapan asam dari HX adalah …..
2 x 10-20
4 x 10-20
5 x 10-20
4 x 10-10
5 x 10-10
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Suatu obat baru yang diperoleh dari biji tanaman ternyata berupa basa organik yang lemah, bila 0,100 M larutan obat tersebut dalam air mempunyai pH = 11 maka Kb obat tersebut adalah . . .
10-2
10-3
10-4
10-5
10-6
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Larutan asam sitrat (Ka= 1,8 x 10−5) akan menyalami perubahan pH dari 3 menjadi 4, jika diencerkan .... kali
10
20
50
100
200
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Suatu basa lemah NH4OH mempunyai konsentrasi 0,5 M dan terionisasi sebanyak 10%. Harga pOH dan pH secara berturut-turut adalah …
1 – log 2 dan 13 + log 2
2 – log 5 dan 12 + log 5
3 – log 4 dan 11 + log 4
4 – log 6 dan 10 + log 6
5 – log 3 dan 9 + log 3
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