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A person requires 2870kcal of energy to ...

A person requires `2870kcal` of energy to lead normal daily life. If heat of combustion of cane sugar is `-1349kcal`, then his daily comsumption of sugar is `:`

A

728 g

B

0.728 g

C

342 g

D

0.342 g

Text Solution

Verified by Experts

The correct Answer is:
A
`C_(12)H_(22)O_(11)+12O_(2)rarr12CO_(2)+11H_(2)O , Delta H_("Comb.")=-1349 kCal`
1344 KCal heat is produced by 1 mole sugar,
`therefore` 2870 KCal at heat is produced by
`((1)/(1349)xx2870)` mol sugar
`therefore` Mass of sugar `=(1)/(1349)xx2870xx342 g`
= 728 g
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ALLEN-THERMODYNAMICS -EXERCISE -3
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  2. Find out the heat evolved in combustion if 112 litre (at 1 atm, 273 K)...

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

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

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

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

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

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