Soal Latihan Termokimia
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Medium
Octaviano Hartanto
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15 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
Pernyataan yang benar adalah
pada reaksi 2 dan 3 terjadi perpindahan kalor dari lingkungan ke sistem
pada reaksi 1 dan 2 terjadi perpindahan kalor dari sistem ke lingkungan
pada reaksi 1 dan 4 terjadi perpindahan kalor dari sistem ke lingkungan
pada reaksi 3 dan 4 terjadi perpindahan kalor dari sistem ke lingkungan
pada reaksi 1 dan 2 terjadi perpindahan kalor dari lingkungan ke sistem
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Reaksi antara 4 mol logam besi dengan 3 mol gas oksigen menghasilkan 2 mol padatan besi(III) oksida, reaksi ini melepaskan kalor sebesar 1650 kJ
4Fe(l)+ 3O2(g) ⟶ 2Fe2O3(s) ΔH = –1650 kJ
4Fe(s)+ 3O2(g) ⟶ 2Fe2O3(s) ΔH = +1650 kJ
4Fe(s) + 3O2(g) ⟶ 2Fe2O3(s) ΔH = –1650 kJ
4Fe(s) + 3O2(g) + 1650 kJ ⟶ 2Fe2O3(s)
4Fe(l)+ 3O2(g) ⟶ 2Fe2O3(s) + 1650 kJ
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Persamaan reaksi yang merupakan ΔHf, ΔHd, dan ΔHc berturut-turut adalah
1, 2, dan 3
1, 2, dan 4
2, 3, dan 4
3, 4, dan 5
3, 1, dan 2
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diketahui perubahan entalpi pembentukan standar Na2SO4 (s) sebesar -1267 kJ. Persamaan termokimia yang tepat untuk pernyataan tersebut adalah
Na2SO4(s) ⟶ 2Na(s) + S(s) + 2O2(g) ΔH = -1267 kJ
Na2SO4(s) ⟶ 2Na+(aq) + SO42-(aq) ΔH = -1267 kJ
2Na+(aq) + SO42-(aq) ⟶ Na2SO4(s) ΔH = -1267 kJ
2Na(s) + SO2(g) + O2(g) ⟶ Na2SO4(s) ΔH = -1267 kJ
2Na(s) + S(s) + 2O2(g) ⟶ Na2SO4(s) ΔH = -1267 kJ
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Perhatikan reaksi berikut!
2C2H6(g) + 7O2(g) ⟶ 4CO2(g) + 6H2O(g) ΔH = – P kJ
Berdasarkan data tersebut maka ΔH𝑜𝐶 C2H6 adalah .... kJ/mol
– 2P
– P
– P/2
+ P/2
+ 2P
6.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
Perhatikan reaksi berikut!
CO2(g) ⟶ C(g) + O2(g) ΔH = + S kJ/mol
Berdasarkan data tersebut maka ΔH𝑓𝑜 CO2 adalah .... kJ/mol
+ 2S
+ S
– S/2
– S
– 2S
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Jika diketahui:
N2(g) + 3H2(g) ⇌ 2NH3(g) ΔH = – 92 kJ
Besarnya 𝛥H𝑓𝑜 pada reaksi tersebut adalah
– 92 kJ/mol
– 46 kJ/mol
+ 46 kJ/mol
+ 92 kJ/mol
+ 184 kJ/mol
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