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A person requires 2870 kcal of energy to...

A person requires 2870 kcal of energy to lead normal daily life. If heat of combustion of cane sugar is – 1349 kcal, then his daily consumption 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
  1. When a certain amount of ethylene was combusted, 6226 kJ heat was evol...

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

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  3. A person requires 2870 kcal of energy to lead normal daily life. If he...

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

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

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

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  7. The enthalpy combustion of a substance

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

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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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  10. 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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  11. Which of the following equations corresponds to the enthalpy of combus...

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  12. Heat of formation of CO2 is 94.0 K.cal. What would be thequantity of h...

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

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  14. If H^(+)+OH^(-)to H(2)O(l)+13.7 Kcal, then the value of heat of neutra...

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  15. The heat of neutralisation of a strong dibasic acid in dilute solution...

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

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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 and OH^(-) ions then the enthalpy of formati...

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

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

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