
Hukum Hess

Quiz
•
Chemistry
•
12th Grade
•
Medium
Standards-aligned
Rustan Hamzah
Used 76+ times
FREE Resource
36 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. Gunakan hukum Hess untuk menentukan ΔH reaksi:
C(s) + 12O2(g) + 2H2(g)→ CH3OH(g)
Diketahui:
C(s) + 12 O2(g)→ CO(g) ΔH°1 = –111 kJ
CO(g) + 2H2(g)→ CH3OH(l) ΔH°2 = –128 kJ
-132 kJ
-239 kJ
-264 kJ
-458 kJ
-524 kJ
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diketahui ΔH°f: CH4(g) =–75 kJ mol–1; CO2(g) =–394kJ mol–1; H2O() =–286 kJ mol–1; C2H4(g) = 52 kJ mol–1;SO2(g) =–297 kJ mol–1; H2S(g) = 21 kJ mol–1.
Hitung ∆H° untuk reaksi berikut!
CH4(g) + 2O2(g) →CO2(g) + 2H2O(l)
-1041 kJ
-1542 kJ
-2432 kJ
-2643 kJ
-2842 kJ
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diketahui perubahan entalpi reaksi-reaksi berikut:
H2(g) + F2(g) → 2HF(g) ΔH = -537 kJ
C(s) + 2F2(g) → CF4(g) ΔH = -680 kJ
2C(s) + 2H2(g)→C2H4(g) ΔH = 52,3 kJ
Tentukan ΔH dari reaksi:
C2H4(g) + 6F2(g) → 2CF4(g) + 4HF(g)
-1234,5 kJ
-2467 kJ
-2486,3 kJ
-2592,6 kJ
-2642,6 kJ
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Perhatikan diagram tingkat energi diatas :
Hubungan yang benar ditunjukkan oleh persamaan . . . . .
∆H4 =∆H1 - ∆H2 + ∆H3
∆H4 = ∆H1 + ∆H2 + ∆H3
∆H4 = ∆H2 - ∆H3 + ∆H1
∆H4 = ∆H1 - ∆H2 - ∆H3
∆H4 = ∆H2 + ∆H3 - ∆H1
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Perhatikan diagram siklus energi diatas :
Harga perubahan entalpi 2SO(s) + O2(g)pembentukan gas SO3 berdasarkan siklus diatas adalah . . . . .
790 kJ
395 kJ
– 395 kJ
– 396 kJ
– 790 kJ
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Perhatikan persamaan termokimia berikut :
2CuCl(s) → 2Cu(s) + Cl2(g) ΔH = +274,4 kJ
2CuCl(s) + Cl2(g) → 2CuCl2(s) ΔH = -165,8 kJ
ΔH untuk reaksi :
Cu(s) + Cl2(g) → CuCl2(s)
yaitu,....
43 kJ/mol
86 kJ/mol
484 kJ/mol
570 kJ/mol
1054 kJ/mol
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diberikan dua persamaan termokimia dari dua reaksi pembakaran berikut :
1) C2H5OH(aq) + 3O2(g) → 2CO2(g) + 3 H2O(g) ΔH = -1380 kJ
2) C6H12O6(s) + 6O2(g) → 6CO2(g) + 6H2O(g) ΔH = -2820 kJ
Berdasarkan kedua reaksi termokimia tersebut, besar perubahan entalpi untuk reaksi fermentasi glukosa adalah,....
-1440 kJ
-60 kJ
+60 kJ
+2760 kJ
+2880 kJ
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