TERMOKIMIA
Quiz
•
Chemistry
•
11th Grade
•
Hard
Standards-aligned
dirre reigina
Used 7+ times
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13 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Pernyataan yang benar tentang reaksi endoterm adalah ....
entalpi awal lebih besar dari entalpi akhir dan ΔH > 0
entalpi awal lebih kecil dari entalpi akhir dan ΔH > 0
entalpi awal lebih besar dari entalpi akhir dan ΔH < 0
entalpi awal lebih kecil dari entalpi akhir dan ΔH < 0
entalpi awal sama dengan entalpi akhir dan ΔH = 0
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Jika sebongkah kapur tohor dimasukkan kedalam tabung reaksi yang berisi air, tabung reaksi akan terasa panas. Reaksi yang terjadi dapat digolongkan kedalam reaksi,....
eksoterm, energi berpindah dari lingkungan ke sistem
eksoterm, energi berpindah dari sistem ke lingkungan
endoterm, energi berpindah dari sistem ke lingkungan
endoterm, energi berpindah dari lingkungan ke sistem
endoterm, tidak ada perpindahan energi
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Berikut ini yang merupakan reaksi pembentukan standar adalah ....
Ca(s) + O(g) + H(g) ------> Ca(OH)2 (s) ΔH = -a kal
Ca2+(s) + O2 (g) + H2(g) ------> Ca(OH)2 (s) ΔH = -a kal
Ca(s) + O2 (g) + H2(g) ------> Ca(OH)2 (s) ΔH = -a kal
Ca(s) + 2O2(g) + 2H(g) ------> Ca(OH)2 (s) ΔH = -a kal
2Ca(s) + O2(g) + H2(g) ------> 2Ca(OH)2 (s) ΔH = -a kal
4.
MULTIPLE CHOICE QUESTION
5 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
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Sebanyak 2 mol gas hidrogen jika direaksikan dengan 1 mol gas oksigen akan terbentuk uap air yang membutuhkan kalor sebesar 484 kJ. Persamaan termokimianya adalah … .
H2(g) + ½ O2(g) --> H2O(g) ΔH = 484 kJ
2 H2(g) + O2(g) --> 2 H2O(g) ΔH = 484 kJ
2 H2(g) + O2(g) --> 2 H2O(g) ΔH = –484 kJ
2 H2O(g) --> 2 H2(g) + O2(g) ΔH = –484 kJ
H2O(g) --> H2(g) + ½ O2(g) ΔH = 484 kJ
Tags
NGSS.HS-PS1-4
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Entalpi pembentukan AgNO3 = -23 kkal/mol. Pernyataan ini dapat ditulis sebagai ...
Tags
NGSS.HS-PS1-4
NGSS.HS-PS3-4
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Berdasarkan diagram di atas, maka nilai ΔH2 adalah …
ΔH1 + ΔH3 + ΔH4
ΔH1 – ΔH3 – ΔH4
ΔH1 + ΔH3 + ΔH4
ΔH1 + ΔH3 – ΔH4
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