latihan termokimia

Quiz
•
Others
•
11th Grade
•
Hard

Mmmm Nnnn
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15 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
NH4+ + Cl- → NH4Cl
N2 + O2 → 2 NO
S + O2 → SO2
PCl3 + Cl2 → PCl5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Entalpi pembakaran gas C4H8 = a KJ/mol. Jika entalpi pembentukan gas CO2 dan uap aer berturut-turut adalah b KJ/mol dan c KJ/mol, maka entalpi pembentukan gas C4H8 adalah....
(a+b+c) KJ/mol
(-a+4b+4c) KJ/mol
(a+4b+4c) KJ/mol
(2a-2b-2c) KJ/mol
(a-2b-2c) KJ/mol
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
+108 KJ/mol
+10,8 KJ/mol
+54 KJ/mol
-54 KJ/mol
-108 KJ/mol
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Diketahui beberapa persamaan termokimia sebagai berikut:
MnO2 + CO → MnO + CO2 ΔH= – 151 kJ
Mn3O4 + CO → 3 MnO + CO2 ΔH= – 54 kJ
3 Mn2O3 + CO → 2 Mn3O4 + CO2 ΔH= –141 Kj
ΔH untuk reaksi:
2 MnO2 + CO → Mn2O3 + CO2 adalah ...
-219 KJ
-346 KJ
-145 KJ
+145 Kj
+219 KJ
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
H2 + Br2 → 2HBr ΔH = -72 KJ
Untuk menguraikan 11,2 dm3 (STP) gas HBr menjadi H2 dan Br2 diperlukan energi sebesar....
9 KJ
18 KJ
36 KJ
72 KJ
144 KJ
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Perhatikan reaksi berikut!
2B5H9 + 12O2 → 5B2O3 + 9H2O
ΔH = -1.870 KJ
C6H4O2 + H2 → C6H4(OH)2
ΔH = -170 KJ
JIka panas yang dihasilkan dari pembakaran B5H9 digunakan untuk mengubah C6H4(OH)2 menjadi C6H4O2, massa B5H9 yang diperlukan untuk menghasilkan 220 gram H2 adalah...640
80 gram
160 gram
320 gram
640 gram
1.280 gram
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
pilihlah yang benar!
A
B
C
D
C
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