
HUKUM HESS, DATA ENTALPI DAN ENERGI IKATAN
Authored by Hafidha Kurniati
Chemistry
12th Grade
NGSS covered

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Dari siklus di samping, perubahan entalpi reaksi : CaO + H2O → Ca(OH)2 adalah….
a. -50 kJ
b. -44 kJ
c. -266 kJ
d. 55 kJ
e. 60 kJ
2.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Perhatikan reaksi berikut :
H2 + ½ O2 → H2O ΔH = -242 kJ
Energi ikatan H – H dan O = O masing-masing 436 kJ/mol dan 500 kJ/mol, maka energi ikatan rata-rata H – O adalah…Kj
a. 121
b. 222
c. 363
d. 464
e. 589
3.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Diketahui :
∆H°f CO = -111 kJ/mol
∆H°f H2 = 0
∆H°f CH3OH = -239 kJ/mol
Berapakah besarnya nilai perubahan entalpi pada reaksi:
CO(g) + 2H2(g) → CH3OH(l)
a. 128 kJ/mol
b. -182 kJ/mol
c. - 128 kJ/mol
d. 182 kJ/mol
e. 111 kJ/mol
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Hubungan yang benar dari diagram energi tersebut adalah ….
5.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
+94 kJ
+81 kJ
-81 kJ
-94 kJ
-208 kJ
6.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
– 17 kJ
+ 17 kJ
– 44 kJ
+ 44 kJ
+ 47 kJ
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
– 1.500 kJ
– 1.491 kJ
– 1.400 kJ
+ 1.400 kJ
+ 1.491 kJ
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