
Perubahan entalpi 2

Quiz
•
Chemistry
•
11th Grade
•
Medium
Standards-aligned

soemartini hardhyonotini_1_sby
Used 6+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tentukan ΔH reaksi berikut.
CH4(g) + 2O2(g) ----> CO2(g) + 2H2O(l)
Jika diketahui
Δ𝐻𝑓0 CH4 (g) = -75kJ/mol
Δ𝐻𝑓0 H2O (l) = -285kJ/mol
+898 kJ/mol
+233 kJ/mol
-233 kJ/mol
-898 kJ/mol
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada pembakaran 64 gram metanol (Mr=32) dalam kalorimeter menyebabkan suhu air meningkat 200C. Jika kalorimeter berisi 5 liter air (ρ=1kg/L) dan kalor jenis air = 4,2 J.g-1.0C-1. Jika kapasitas kalorimeter = 2.700 J.0C-1
maka entalpi pembakaran metanol adalah....
-48 kJ/mol
-64 kJ/mol
-72 kJ/mol
-96 kJ/mol
-102 kJ/mol
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
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
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Diketahui :
CS2 + 3O2 → CO2 + 2SO2 ΔH = -1110 kJ
CO2 → C + O2 ΔH = +394kJ
SO2 → S + O2 ΔH = +297 kJ
Maka kalor pembentukan CS2 adalah ...
+122 kJ
-122 kJ
+419 kJ
-419 kJ
+906 kJ
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Diketahui:
2H2 + O2 ® 2H2O ∆H = – 571 kJ/mol
2Ca + O2 ® 2CaO ∆H = – 1269 kJ/mol
CaO + H2O ® Ca(OH)2 ∆H = – 64 kJ/mol
Besar ∆H untuk reaksi penguraian Ca(OH)2 adalah …
+ 984 kJ/mol
+ 1161 kJ/mol
+ 1452 kJ/mol
+ 1966 kJ/mol
+1254
7.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Diketahui energi ikatan sebagai berikut:
C=C = 606,1 kJ
C-C = 347,4 kJ
H-H = 435,6 kJ
C-H = 412,3 kJ
Persamaan reaksi adisi adalah
C2H4 + H2 → C2H6
ΔH reaksi berikut adalah
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