Botany - Respiration in Plants Question with Solution | TestHub

In respiration, from 180 gm of glucose 264 gm Co₂+ 108 gm H₂O + 686 Kcal energy is formed.

${\text{C}}_6{\text{H}}_{12}{\text{O}}_6+6{\text{O}}_2\to 6{\text{CO}}_2+6{\text{H}}_2\text{O}+686Kcal$

Atomic weight of C = 12, H = 1, O = 16

C₆H₁₂O₆$=\left(13\times 6+12\times 1+16\times 6\right)$

= 180 gm

6CO₂= 6 (12 + 16 x 2)

= 264 gm

6H₂O          = 6 (2 x 1 + 16)

= 108 gm

∴From 1 molecule or 180 gm of glucose, through respiration, 264 gm CO₂, 108 gm H₂O and 686 Kcal energy are formed.