
TERMOKIMIA
Authored by Evi Lutfia
Chemistry
University
NGSS covered
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20 questions
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1.
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
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Dilaboratorium larutan HCl direaksikan dengan larutan KOH dalam sebuah tabung reaksi. Sistem dari percobaan tersebut yaitu,.....
larutan HCl dan larutan KOH
laboratorium dan larutan HCl
tabung reaksi dan larutan HCl
tabung reaksi dan larutan KOH
laboratorium dan tabung reaksi
3.
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
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Perhatikan persamaan termokimia berikut :
2CuCl(s) → 2Cu(s) + Cl2(g) ΔH = +274,4 kJ
2CuCl(s) + Cl2(g) → 2CuCl2(s) ΔH = -165,8 kJ
ΔH untuk reaksi :
Cu(s) + Cl2(g) → CuCl2(s)
yaitu,....
43 kJ/mol
86 kJ/mol
484 kJ/mol
570 kJ/mol
1054 kJ/mol
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Data energi ikatan rata rata :
C=C = 609 kJ/mol
C-Cl = 326 kJ/mol
C-H = 412 kJ/mol
C-C = 345 kJ/mol
H-Cl = 426 kJ/mol
Besarnya entalpi reaksi
CH2=CH2 + HCl → CH3CH2Cl
adalah,......
-312 kJ/mol
-48 kJ/mol
48 kJ/mol
100 kJ/mol
312 kJ/mol
Tags
NGSS.HS-PS1-4
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Perhatikan diagram tahap reaksi pada gambar.
Dari diagram diatas, harga x adalah,......
-99 kJ
-297 kJ
-594 kJ
-990 kJ
-998 kJ
Tags
NGSS.HS-PS1-4
NGSS.HS-PS3-1
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebanyak 25 ml (25 gram) larutan NH4OH 1 M suhunya 20oC di campurkan dengan 25 ml (25 gram) larutan HNO2 1 M suhunya 20oC dalam calorimeter gelas plastic, ternyata suhu campuran naik menjadi 27,5 oC jika kalor jenis larutan di anggap sama dengan kalor jenis air yaitu 4,18 Jg-1c-1 . Di bawah ini perubahan entalpi reaksi yang terjadi……
59,8 KJ/mol
62,7 KJ/mol
-71,8 KJ/mol
-62,7 KJ/mol
-59,8 KJ/mol
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