TERMOKIMIA
Quiz
•
Chemistry
•
11th Grade
•
Hard
Muhammad Gianto
Used 19+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Reaksi dimana terjadi penyerapan kalor dari lingkungan ke dalam sistem disebut....
Lingkungan
Ekosistem
Sistem
Eksoterm
Endoterm
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Sistem yang memungkinkan terjadinya perpindahan energi dan massa disebut...
Sistem terisolasi
Sistem terbuka
Sistem tertutup
Sistem menyempit
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Siklus suatu reaksi ditunjukkan dengan diagram di atas ....
Dari siklus di atas harga ∆H1 adalah . . .
-225 kJ
+105 kJ
-135 kJ
+225 kJ
-105 kJ
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diketahui :
2NO(g) + O2(g) --> N2O4(g) ΔH = 32,5 kJ
NO(g) + O2(g) --> NO2(g) ΔH = -64,5 kJ
Besarnya ΔH untuk reaksi :
2NO2(g) --> N2O4(g) adalah …
-32,5 kJ
161,5 kJ
-96,5 kJ
0,5 kJ
97 kJ
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Persamaan reaksi termokimia berikut yang merupakan reaksi pembentukan standar adalah ...
H2 + ½ O2 → H2O ∆H = -242 kJ
CO2 → CO + ½ O2 ∆H = +283 kJ
LiOH → Li+ + OH- ∆H = -20 kJ
NH3 → N2 + 3/2 H2 ∆H = +92 kJ
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Apabila diketahui kalor pembentukan Fe3O4 = -250 kkal dan kalor pembentukan H2O = -68 kkal, maka kalor reaksi 3Fe + 4H2O → Fe3O4 + 4H2 adalah ...
-500 kkal
-324 kkal
-208 kkal
-22 kkal
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Diketahui :
ΔHof C2H6(g) = -84,7 kJ/mol
ΔHof H2O (l) = -285,8 kJ/mol, dan
ΔHof CO2(g) = -393,6 kJ/mol
Berdasarkan data entalpi pembentukan standar tersebut, besar perubahan entalpi pembakaran gas etana adalah,.....
-84,7 kJ/mol
-285,8 kJ/mol
-393,5 kJ/mol
-1559,7 kJ/mol
-1644,4 kJ/mol
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