Question

How much energy will you get from one gram of glucose?

Answer 1

Glucose:

1. Glucose is a monosaccharide that is used for energy production in our bodies.
2. When glucose is oxidized in the presence of oxygen, it breaks down into carbon dioxide gas and water molecules.
3. Energy is released in this process.
4. The reaction of glucose oxidation is as follows:
   ${\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6+6{\mathrm{O}}_2\to 6{\mathrm{CO}}_2+6{\mathrm{H}}_2\mathrm{O}+\mathrm{Energy}$

$$\begin{gathered} Themolecularweightofglu\cos eis(6\times 12+12\times 1+6\times 16)gram=180gram \\ Asweknow,numberofmoles=\frac{weightofsubs\tan ce(ingram)}{atomicweight} \\ So,numberofmoles=\frac{1}{180}=0.00555 \\ Theenergyreleasedbytheoxidationof1moleglu\cos eis686kcal. \\ So,theenergyreleasedbytheoxidationof0.00555molesofglu\cos e=686\times 0.00555kcal=3.8073kcal. \\ Therefore,around4kcalenergywillbereleasedbytheoxidationof1gramofglu\cos e. \end{gathered}$$