The values of heat of combustion of ethane `(C_(2)H_(6))` and ethyne `(C_(2)H_(2))` are `-341` and `-310 Kcal` respectively. Then which of the followi

Question

The values of heat of combustion of ethane `(C_(2)H_(6))` and ethyne `(C_(2)H_(2))` are `-341` and `-310 Kcal` respectively. Then which of the followi

The values of heat of combustion of ethane `(C_(2)H_(6))` and ethyne `(C_(2)H_(2))` are `-341` and `-310 Kcal` respectively. Then which of the following is better fuel on mass basis:
A. `C_(2)H_(2)`
B. `C_(2)H_(6)`
C. Both (A) & (B)
D. None of these

Monjur Alahi

6 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - A
Calorific value `=(DeltaH)/("mol.wt")`
for ethane `(C_(2)H_(6))= -(341)/(30)= -11.37`
for ethyne `(C_(2)H_(2))= -(310)/(26)= -11.9`
So, better calorific value is better fuel hence, `C_(2)H_(2)`

6 views Answered 2023-02-05 15:29