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Chemistry
11th Grade

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31 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
31. Data energi ikatan :
C = C = 611kJ/mol
C – H = 414kJ/mol
H – Cl = 431kJ/mol
C – Cl = 339kJ/mol
C – C = 347kJ/mol
Berdasarkan data energi ikatan, maka perubahan entalpi pada reaksi C2H4 + HCl → C2H5Cl adalah…kJ.
+46
-46
-58
-138
-148
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
32. Diketahui energi ikatan :
O = H = 464 kJ
O = O = 500 kJ
H – H = 436 kJ
Kalor yang diperlukan untuk menguraikan 9 g air (Mr=18) adalah
8 kJ
121 kJ
222 kJ
242 kJ
472 kJ
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
33. Jika energi ikatan rata-rata dari :
C = C = 146kkal/mol
C – C = 83kkal/mol
C – H = 99kkal/mol
C – Cl = 79kkal/mol
H – Cl = 103kkal/mol
Maka perubahan entalpi pada adisi etena dengan asam klorida menurut persamaan adalah sebesar
510 kkal
510 kkal
b. -72,8 kkal
510 kkal
b. -72,8 kkal
c. -12 kkal
510 kkal
b. -72,8 kkal
c. -12 kkal
d. 12 kkal
510 kkal
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
34. Pada reaksi :
Energi ikatan C=O, H=O, dan O=O berturut-turut adalah 243 kJ/mol, 432 kJ/mol, dan 335 kJ/mol. Energi ikatan rata-rata C – H adalah….
194,75 kJ/mol
358,75 kJ/mol
804,5 kJ/mol
595,00 kJ/mol
599,50 kJ/mol
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
35. Diketahui data energi ikatan rata-rata sebagai berikut :
H – H = 436 kJ/mol ; Cl – Cl = 242 kJ/mol ; dan H – Cl = 431 kJ/mol
Kalor yang diperlukan untuk menguraikan 146 gram HCl menjadi unsur-unsurnya adalah…
92 kJ
184 kJ
247 kJ
368 kJ
494 kJ
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
36. Diketahui entalpi pembentukan H2O(g) = -242 kJ/mol, energi ikatan H –H = 436 kJ/mol dan energi ikatan dalam molekul oksigen adalah 495 kJ/mol. Energi ikatan O – H dalam air adalah
1173 kJ/mol
925,5 kJ/mol
804,5 kJ/mol
586,5 kJ/mol
402,25 kJ/mol
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
37. 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
121
222
363
464
589
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