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Heat of combustion of Ch4, C2H4 and C2H6 are -890,-1411 and -1560 kJ/mol respectively. Which has the lowest calorific value in kJ/g? Ch4 C2H4 C2H6 All of these

Heat of combustion of Ch4, C2H4 and C2H6 are -890,-1411 and -1560 kJ/mol respectively. Which has the lowest calorific value in kJ/g?
  1. Ch4
  2. C2H4
  3. C2H6
  4. All of these

Grade:11

4 Answers

Arun
25750 Points
5 years ago
Dear Abhishek
 
Calorific Value of CH4 = – 890 / 16 =  – 55.53 Kj/ mol
 
Calorific Value of C2H4 =  – 1411 / 28 =  – 50.36 Kj/mol
 
Calorific Value of C2H6 =  – 1560 / 30 =  – 52 Kj / mol
 
Hence C2H4 has least Calorific Value
radhika jaswal
15 Points
3 years ago
 
Calorific Value of CH4 = – 890 / 16 =  – 55.53 Kj/ mol
 
Calorific Value of C2H4 =  – 1411 / 28 =  – 50.36 Kj/mol
 
Calorific Value of C2H6 =  – 1560 / 30 =  – 52 Kj / mol
 
Hence C2H4 has least Calorific Value
Aarzoo sharma
13 Points
2 years ago
A value having negative sign has very low value so according to that ch4 should have lower value then why c2h4
Dr Iruwa
34 Points
2 years ago
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