PTS Genap kimia XI
Quiz
•
Chemistry
•
11th Grade
•
Hard
Hesty Noviastuty
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20 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Suatu bahan bakar yang berasal dari senyawa hidrokarbon mempunyai entalpi pembakaran – 2,305 kJ/mol. Bila bahan bakar (Mr = 44) tersebut dibakar sebanyak 10,5 gram, maka entalpi pembakaran yang dihasilkan adalah…
2.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Suatu campuran pereaksi di dalam tabung reaksi meyebabkan tabung tersebut menjadi panas jika dipegang. Penyataan yang tepat mengenai hal tersebut adalah….
Entalpi pereaksi bertambah
Entalpi peraksi berkurang
Entalpi pereaksi dan hasil reaksi bertambah
Entalpi pereaksi lebih besar daripada entalpi hasil reaksi
Entalpi hasil reaksi lebih besar daripada entalpi pereaksi
3.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Diketahui reaksi pembakaran :
C2H2(aq)+O2(g) ®→ 2CO2(g)+ 2H2O(g) ΔH=-120kJ.
Pada pembakaran 5,6 liter C2H2 keadaan standar:
membebaskan 240 kj
memerlukan 240 kj
entalpi sistem bertambah sebesar 120 kj
diserap 30 kj
dibebaskan 30 kj
4.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
A
B
C
D
E
5.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Data energi ikatan :
C = C = 611 kJ/mol
C – H = 414 kJ/mol
H – Cl = 431 kJ/mol
C – Cl = 339 kJ/mol
C – C = 347 kJ/mol
Berdasarkan data energi ikatan, maka perubahan entalpi pada reaksi C2H4 + HCl → C2H5Cl adalah...kJ.
+46
-46
-58
-138
-148
6.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Kenaikan suhu akan mempercepat laju reaksi karena
kenaikan suhu akan menyebabkan konsentrasi pereaksi meningkat
frekuensi tumbukan semakin tinggi
dalam reaksi kimia suhu berperan sebagai katalisator
kenaikan suhu akan mengakibatkan turunnya energi aktivasi
energi kinetik partikel-partikel yang bereaksi semakin tinggi
7.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Suatu reaksi kimia yang berlangsung pada suhu 30 °C memerlukan waktu 40 detik. Setiap kenaikan suhu 10 °C, reaksi akan lebih cepat dua kali dari semula. berapakah waktu yang diperlukan jika suhu dinaikkan menjadi 50 °C…
30 detik
20 detik
15 detik
10 detik
5 detik
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