Perhatikan persamaan termokimia berikut:
2H2(g) + O2(g) → 2H2O(l) ∆H = -136 Kkal
H2(g) + O2(g) → H2O2(l) ∆H = -44,8 Kkal
Hitunglah ∆H untuk reaksi, 2H2O2 → 2H2O + O2
Quiz Hukum Hess
Quiz
•
Chemistry
•
9th - 12th Grade
•
Medium
Niti Saraswati
Used 1+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Perhatikan persamaan termokimia berikut:
2H2(g) + O2(g) → 2H2O(l) ∆H = -136 Kkal
H2(g) + O2(g) → H2O2(l) ∆H = -44,8 Kkal
Hitunglah ∆H untuk reaksi, 2H2O2 → 2H2O + O2
-36 Kkal
46,4 Kkal
44,5 Kkal
40 Kkal
2.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Berikut ini adalah diagram tingkat energi pembentukan gas CO2,
maka harga ΔH2 adalah …
ΔH2 = ΔH3 + ΔH1
ΔH2 = ΔH3 – ΔH1
ΔH2 = ΔH1 – ΔH3
ΔH2 = 1/3 (ΔH1 – ΔH3)
3.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Jika diketahui:
C(intan) + O2 (g) → CO2 (g) ΔH = -394,1 kj
C(grafit) + O2 (g) → CO2 (g) ΔH = – 396,0 kj
Maka ΔH untuk reaksi C(grafit) → C(intan) adalah … kj
+1,9
+0,95
-790
-1,9
4.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Diagram tahap reaksi pembentukan gas SO3 adalah sebagai berikut, tentukan harga ΔH2 …
790,4 kj
593,8 kj
250,6 kj
-250,9 kj
5.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Dari diagram tersebut, harga x adalah … kj
– 203
+203
-406
+406
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