
Quiz Energi dan Reaksi Kimia
Quiz
•
Biology
•
12th Grade
•
Medium
Erha Axis
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika sistem menyerap 100 J energi panas dan melakukan kerja sebesar 40 J, maka perubahan energi dalam sistem adalah:
60 J
100 J
140 J
-60 J
-100 J
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Reaksi pembakaran yang menghasilkan panas termasuk dalam jenis reaksi:
Eksoterm
Endoterm
Spontan
Non-spontan
Isoterm
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika 50 gram air mengalami kenaikan suhu dari 20°C menjadi 70°C dengan kapasitas panas jenis air 4,18 J/g°C, maka jumlah kalor yang diserap adalah:
1000 J
10450 J
4180 J
2090 J
5000 J
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebuah reaksi memiliki entalpi pembentukan standar ΔHf∘=−285,8 kJ/mol. Pernyataan ini berarti:
Reaksi membutuhkan energi 285,8 kJ
Reaksi melepaskan energi 285,8 kJ
Reaksi terjadi pada suhu tinggi
Produk reaksi memiliki energi yang lebih tinggi
Tidak ada kalor yang terlibat
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Di antara zat berikut, manakah yang memiliki entalpi pembentukan standar sebesar nol pada kondisi standar?
H2O (l)
O2 (g)
CO2 (g)
C2H5OH (l)
NaCl (s)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kalor pembentukan standar ΔHf∘ untuk CO2 adalah -393,5 kJ/mol. Ini berarti bahwa:
Energi dilepaskan saat 1 mol CO2 terbentuk
Energi diserap saat 1 mol CO2 terbentuk
Tidak ada perubahan energi
Reaksi endoterm
Reaksi bersifat non-spontan
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika sistem menyerap 300 J dari sekeliling dan tidak melakukan kerja, perubahan energi dalam sistem adalah:
300 J
0 J
-300 J
600 J
-600 J
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