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In the combustion of 0.4 g. of CH(4) 0.2...

In the combustion of 0.4 g. of `CH_(4)` 0.25 Kcal. Of heat is liberated. The heat of combustion of `CH_(4)` is

A

`-20` K. Cals.

B

`-10` K. Cals.

C

`-2.5` K. Cals.`

D

`-5` K. Cals.

Text Solution

Verified by Experts

The correct Answer is:
B
In the combution of `0.4 g CH_(4)` produced heat is `=(0.25)/(0.4)xx1610 KCal mol^(-1)`
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ALLEN-THERMODYNAMICS -EXERCISE -3
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  2. The value of Delta H for the combustion of C(s) is - 94.4 Kcal. The he...

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

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  4. If C(6)H(12)O(6)(s)+9O(2)(g)rarr6CO(2)(g)+6H(2)O(g) , Delta H=-680 Kca...

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

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  6. Heat of formation of CO(2) is -94.0 K. cal. What would be the quantity...

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  7. The amount of heat liberated when one mole of NH(4)OH reacts with one ...

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  8. If H^(+)+OH^(-)rarrH(2)O+13.7Kcal , the heat of neutralisation for com...

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  9. Heat of neutralisation of a strong dibasic acid in dilute solution by ...

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  10. The temperature of a 5mL of strong acid increases by 5^(@) when 5 mL o...

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  11. The enthalpy of neutralisation of HCl by NaOH IS -55.9 kJ and that of...

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  12. If water is formed from H^(+) ions and OH^(-) the heat of formation of...

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  13. The change in the enthalpy of NaOH+HCl rarr NaCl+H(2)O is called :

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  14. Heat of neutralisation of oxalic acid is -106.7 KJ mol^(-1) using NaOH...

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  15. The heats of combustion of C(2)H(4), C(2)H(6) and H(2) gases are -1409...

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  16. The enthalpy of combustion of H(2) , cyclohexene (C(6)H(10)) and cyclo...

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  17. Bond energy of a molecule :

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  18. Among the following for which reaction heat of reaction represents bon...

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  19. The bond energies of F(2),Cl(2),Br(2) and I(2) are 155.4, 243.6, 193.2...

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  20. Energy required to dissociate 4g of gaseous hydrogen into free gaseous...

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