PRE TEST TKA KIMIA ASAM BASA - SMAN 3 PURWOKERTO
Quiz
•
Others
•
12th Grade
•
Hard

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5 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
Seorang siswa menemukan larutan yang memiliki ciri-ciri berikut.
memiliki rasa pahit
memiliki pH lebih dari 7
Mengubah lakmus merah menjadi biru
Dari ciri-ciri tersebut, dapat disimpulkan bahwa larutan tersebut adalah….
Natrium Klorida
Kalsium Hidroksida
Asam asetat
Glukosa
Asam Klorida
2.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
Tahap awal nitrasi benzena mengikuti persamaan berikut.
HNO3 + H2SO4 <=> H2O + NO2+ + HSO4-
Spesi yang bersifat asam adalah….
HNO3
H2SO4
HNO3 dan NO2+
H2SO4 dan HSO4-
H2SO4 dan NO2+
3.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
Berapakah pH larutan H2SO4 dengan konsentrasi 0,01 M?
2
2 - log 2
7
12
12 + log 2
4.
MULTIPLE CHOICE QUESTION
3 mins • 20 pts
Suatu larutan yang terbentuk dari pelarutan gas amonia (NH3) memiliki pH sebesar 11,3 dengan volume larutan sebanyak 250 mL. Jika diketahui nilai Ka larutan amonia sebesar 1,8 x 10-4 , massa amonia dalam larutan tersebut adalah…. (Ar H= 1, Ar N=14, log 2=0,3)
0.06 g
0.30 g
0.75 g
0.94 g
1.20 g
5.
MULTIPLE CHOICE QUESTION
3 mins • 20 pts
Jika sebanyak 25 mL larutan H2SO4 0,10 M dicampurkan dengan 40 mL larutan NaOH 0,08 M, pH campuran dari kedua larutan tersebut adalah ....
A. 2 – log 2,8
B. 2 – log 3,0
C. 2 – log 2,0
D. 2 – log 1,8
E. 2 – log 1,4
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