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The heat of combustion of CH(4(g)), C((g...

The heat of combustion of `CH_(4(g)), C_((g))` and `H_(2(g))` at `25^(@)C` are `-212.4` K cal, -94.0 K cal and -68.4 K cal respectively, the heat of formation of `CH_(4)` will be -

A

`+54.4` K cal

B

`-18.4` K cal

C

`-375.2` K cal

D

`+212.8` K cal

Text Solution

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The correct Answer is:
B
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ALLEN-THERMODYNAMICS -EXERCISE -3
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  2. Calculate the standard heat of formation of carbon disulphide (l). Giv...

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  3. The heat of combustion of CH(4(g)), C((g)) and H(2(g)) at 25^(@)C are ...

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  4. Standard enthalpy of formation is zero for.

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  5. The standard heats of formation of NO(2)(g) and N(2)O(4)(g) are 0.8 an...

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  6. M is a metal that forms an oxide M(2)O,(1)/(2)M(2)O rarr M+(1)/(4)O(2)...

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  7. According to equation, C(6)H(6)(l)+15//2 O(2)(g)rarr 6CO(2)(g)+3H(2)O(...

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  8. 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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  9. Given standard enthalpy of formation of CO(-110 "KJ mol"^(-1)) and CO(...

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  10. The enthalpy of formation for C(2)H(4)(g),CO(2)(g) and H(2)O(l) at 25^...

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

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

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  13. Find out the heat evolved in combustion if 112 litre (at 1 atm, 273 K)...

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  14. A person requires 2870kcal of energy to lead normal daily life. If hea...

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  15. On complete combustion of 2 gm methane -26575 cals heat is generated. ...

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  16. Xg of ethanal was subjected to combustion in a bomb calorimeter and th...

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  17. The following are the heats of reactions - (i) Delta H(f)^(@) of H(2...

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  18. The enthalpy combustion of a substance

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

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

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