Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The daily energy requirement of a teenager is 7800 kJ. As calculated from the data given in the table below, the amount of glucose he has to consume (g) per day assuming that the entire energy he requires comes from the combustion of glucose is
Molecule | ΔHf (kJ mol–1) |
C6H12O6 | – 1273 |
CO2(g) | – 394 |
H2O | – 286 |
Text Solution
Verified by ExpertsThe correct answer is:
B
C 6 H 12 O 6 + 6O 2 ⎯→ 6CO 2 + 6H 2 O
Δ H Comb = 6(–394) + 6( –286 ) – (–1273)
= –2358 – 1716 + 1273
= –2801 kJ/mol
Amount of glucose required per day = 
= 501 g
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