KOGNITIF PERUBAHAN ENTALPI STANDAR

Quiz
•
Chemistry
•
University
•
Hard
Dian Septal
Used 4+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Perubahan entalpi dari reaksi asam dan basa yang membentuk air sebanyak 1 mol disebut…
Penetralan
Pembentukan
Penguraian
Pembentukan
Pelarutan
2.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Perhatikan persamaan termokimia berikut ini:
C(s) + O2(g) --> CO2(g) ∆H=-393,5 kJ
Jenis perubahan entalpi standar pada reaksi tersebut secara berturut-turut adalah….
Pembakaran CO2
Pembakaran C
Pembentukan C
Penguraian CO2
Pelarutan C
3.
MULTIPLE CHOICE QUESTION
2 mins • 10 pts
Pada proses pembentukan ammonium klorida (NH4Cl) dilepaskan kalor sebesar 315,4 kJ/ mol. Persamaan termokimia yang paling tepat untuk proses pembentukan tersebut adalah….
4.
MULTIPLE CHOICE QUESTION
2 mins • 10 pts
Pada proses pembentukan batu gamping (CaCO3) kalor sebesar - 1.207kJ/ mol. Perubahan entalpi untuk menguraikan 2 mol batu gamping tersebut adalah….
-2414 kJ
+2414 kJ
-1.207 kJ
-603,5 kJ
+603,5 kJ
5.
MULTIPLE CHOICE QUESTION
3 mins • 15 pts
Metanol adalah salah satu jenis bahan bakar alternatif untuk mesin pembakaran dalam dan beberapa jenis mesin lainnya. Pada pembentukan methanol menghasilkan perubahan entalpi standar 284 kJ/mol. Perubahan entalpi untuk 16 gram methanol (Mr=32) adalah….
-568 kJ
+568 kJ
-142 kJ
+142 kJ
-71 kJ
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