KUIS TERMOKIMIA (PENENTUAN PERUBAHAN ENTALPI)

Quiz
•
Chemistry
•
11th Grade
•
Hard
Andi Armas
Used 1+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Data energi ikatan :
C = C : 611 kJ/mol
C – H : 414 kJ/mol
H – Cl : 431 kJ/mol
C – Cl : 339 kJ/mol
C – C : 347 kJ/mol
Berdasarkan data energi ikatan, maka perubahan entalpi pada reaksi
C2H4 + HCl → C2H5Cl adalah… kJ
+46
-58
-148
-46
-138
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Diketahui data energi ikatan rata rata :
C – H : 99 kkal
H – Cl : 103 kkal
C – C : 83 kkal
C – Cl : 79 kkal
C = C : 164 kkal
Besarnya perubahan entalpi dari reaksi berikut adalah … kkal.
+36
+6
-8
+8
-6
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Perhatikan persamaan reaksi termokimia di bawah ini:
1. ½ N2 (g) + ½ O2 (g) → NO (g) ΔH = +kJ/mol
2. NO2 (g) → ½ N2 (g) + O2 (g) ΔH = −kJ/mol
3. CO2 (g) → C (s) + O2 (g) ΔH = +kJ/mol
4. C2H5OH + 3O2 → 2CO2 + 3H2O ΔH = −kJ/mol
5. Na (s) + ½ Cl2 (g) → NaCl ΔH = −kJ/mol
Pasangan persamaan reaksi yang merupakan ΔHfo, ΔHdo, dan ΔHco adalah ….
(3), (4), dan (5)
(1), (3), dan (5)
(1), (2), dan (3)
(2), (4), dan (5)
(1), (2), dan (4)
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Bila data entalpi pembentukan standar:
ΔHfo C3H8 (g) = – 104 kJ mol–1
ΔHfo CO2 (g) = – 394 kJ mol–1
ΔHfo H2O (g) = – 286 kJ mol–1
maka harga ΔH reaksi :
C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(l) adalah …
–1.024 kJ
–1.134 kJ
–1.121 kJ
–2.222 kJ
–2.232 kJ
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
jawaban yang tepat untuk soal ini adalah....
+ 92,4
+ 46,2
– 46,2
– 92,4
– 184,8
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