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Combustion fo glucose takes place accord...

Combustion fo glucose takes place according to the equation,`C_(6)H_(12)O_(6)+6O_(2)rarr6CO_(2)+6H_(2)O,DeltaH=-72kcal` How much energy will be required for the production of `1.6`g of glucose (Molecular mass of glucose=180g)

A

0.064 kcal

B

0.64 kcal

C

6.4 kcal

D

64 kcal

Text Solution

Verified by Experts

The correct Answer is:
B

`DeltaH` per 1.6 g = `(72xx1.6)/(180)=0.64` kJ
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The heat evolved in the combustion of glucose is shown in the equation : C_(6)H_(12)O_(6)(s) + 6O_(2)(g) rarr 6CO_(2)(g) + 6H_(2)O (g) , Delta_(c ) H = -2840 kJ mol^(-1) What is the energy requirement for production of 0.36g of glucose by the reverse reaction ?

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Knowledge Check

  • Combustion of glucose takes place according to the equation C_(6)H_(12)O_(6)+6O_(2) rarr 6CO_(2)+6H_(2)O, DeltaH=-"72 kcal/mol" . How much energy will be released by the combustion of 1.6 g of glucose (Molecular mass of glucose = 180 g/mol)?

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    D
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