Termokimia

Quiz
•
Chemistry
•
11th Grade
•
Hard
Standards-aligned
Ina Ayu Nengtyas
Used 52+ times
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20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 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
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Berdasarkan hukum Hess nilai x adalah ...
+91 kJ
-23 kJ
+23 kJ
-91 kJ
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Terjadinya reaksi endoterm ditunjakkan pada gambar nomor…
1 dan 3
2 dan 4
1 dan 4
1 dan 2
3 dan 4
Tags
NGSS.HS-PS1-4
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
Reaksi dalam kehidupan sehari-hari berikut ini yang merupakan reaksi endoterm adalah...
respirasi
fotosintesis
pembakaran
pupuk urea dimasukkan ke dalam air
Tags
NGSS.HS-LS1-5
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
perhatikan reaksi berikut ini
H2 + 1/2 O2 → H20 ∆Hf° = -285,85 KJ
pernyataan yang benar dari reaksi tersebut adalah....
pada pembentukan 1 mol air dari unsur-unsurnya dibebaskan energi sebesar 285,85 Kj
pada pembentukan 1 mol air dari unsur-unsurnya dibutuhkan energi sebesar 285,85 KJ
pada pembentukan 1 mol air dari unsur-unsurnya dibutuhkan energi sebesar -285,85 KJ
pada pembentukan 1 mol air dari unsur-unsurnya dibebaskan energi sebesar -285,85 Kj
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