Question

Find out the calorific value of Glucose?
( ∆H= -2900kj/mol)

Answer 1

Calorific value of glucose is 3.9 kcal/ g

Answer 2

$\huge\mathtt{\fbox{Solution:-}}$

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$C_{6} H_{12} O_{6} + 6 CO_{2} - - - - > 6CO_{2} + 6H_{2}O$

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°•° ∆H = - 2900kj/mol

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Heat evolved from 1 mol glucose = 2900kJ/mol

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or heat evolved from 180g glucose = 2900kJ

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•°• heat evolved from 1g glucose ,

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➾$\frac{2900}{180}$

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➾ $\boxed{16.11kj \: gm}$

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$\huge\mathtt{\fbox{Another\:method:-}}$

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Calorific value = $\frac{H}{molecular\:weight}$

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➾ $\frac{2900}{180}$

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➾ $\boxed{16.11kj \: gm}$

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