Manakah yang termasuk pasangan asam basa konjugasi pada reaksi dibawah ini?
CN- + H2O ⇄ HCN + OH-
Soal Evaluasi Asam Basa
Quiz
•
Chemistry
•
9th - 12th Grade
•
Easy
MAHRITA ULM
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Manakah yang termasuk pasangan asam basa konjugasi pada reaksi dibawah ini?
CN- + H2O ⇄ HCN + OH-
H2O dan OH-
H2O dan CN-
OH- dan HCN
CN- dan HCN
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nama dan rumus basa konjugat dari asam HCN adalah?
Ion nitrit ; NO2-
Ion hidrogen sulfida ; H2SO4-
Ion sianida ; CN-
Ion hidrogen ; OH-
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Konsentrasi ion OH- dalam larutan amonia pembersih rumah tangga adalah 0,0025. Berapakah konsentrasi ion H+?
1 x 10-12M
3 x 10-12M
2,5 x 10-12M
4 x 10-12M
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Berapakah konsentrasi ion OH- dalam larutan HCl yang konsentrasi ionnya 1,3M?
2,7 x 10-15M
7,7 x 10-15M
10 x 10-15M
5 x 10-15M
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
· LiOH
· CN-
· H2O
· ClO4-
· NH2-
Pada spesi berikut ini manakah yang tergolong basa kuat?
LiOH dan NH2-
H2O dan ClO4-
NH2- dan ClO4-
LiOH dan CN-
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diantara zat-zat berikut yang memiliki keasaman paling kuat adalah?
HCN (Ka = 6,0 x 10-10)
CH3COOH (Ka = 1,8 x 10-5)
HCl (Ka = 1 x 10-6 )
NH3 (Ka = 10-33)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Derajat keasaman (pH) asam etanoat 0,02 M ( Ka = 2 x 10-5 ) adalah?
2 − log 3,5
3,5 − log 2
3,5 − log 4
3,5 + log 2
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