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Heat of combustion of CH(4), C(2)H(6), C...

Heat of combustion of `CH_(4), C_(2)H_(6), C_(2)H_(4) and C_(2)H_(2)` gases are 212.8, -373.0, -337.0 and -310.5 Kcal respectively at the same temperature. The beast fuel among these gases is

A

`CH_(4)`

B

`C_(2)H_(6)`

C

`C_(2)H_(4)`

D

`C_(2)H_(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
Higher the calorific value, better is the fuel.
Calorific value `=(Delta H_("Comb."))/("Molecular weight")`
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ALLEN-THERMODYNAMICS -EXERCISE -3
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  2. According to equation, C(6)H(6)(l)+15//2 O(2)(g)rarr 6CO(2)(g)+3H(2)O(...

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  3. Heat of combustion of CH(4), C(2)H(6), C(2)H(4) and C(2)H(2) gases are...

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  4. The standard enthalpy of formation of CO is -110 kJ and of CO2 is -394...

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  5. If enthalpies of formation of C(2)H(4)(g),CO(2)(g) and H(2)O(l) at 25^...

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  6. The heat of combustion of carbon and monoxide are -394 and -285 KJ mol...

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  7. When a certain amount of ethylene was combusted, 6226 kJ heat was evol...

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  11. X gm of ethanal was subjected to combustion in a bomb calorimeter and ...

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  12. The following are heats of reactions : (A) DeltaH(f)^(@) of H(2)O(l)...

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  13. The enthalpy combustion of a substance

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  14. The value of Delta H for the combustion of C(s) is - 94.4 Kcal. The he...

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  15. In the combustion of 0.4 g. of CH(4) 0.25 Kcal. Of heat is liberated. ...

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  16. If C(6)H(12)O(6)(s) +6O(2)(g) to 6CO(2)(g)+6H(2)O (l), triangleH=680 K...

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  17. Which of the following equations corresponds to the enthalpy of combus...

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