Chemistry - Electrochemistry Question with Solution | TestHub

Photosynthesis is a bio process by which plants make energy-rich molecules from low-energy molecules with the help of energy from sunlight. The photosynthesis of glucose can be represented as:→

$6{CO}_{2}g)+6H_{2}Og)+h{\nu \to C}_6{H}_{12}{O}_6\left(s\right)+6O_2\left(g\right)$

Electrochemical oxidation of glucose to ${CO}_2$ and $H_{2}O$, which is the reverse of photosynthesis, is an important reaction and it can be used in the construction of a fuel cell. In a fuel cell, a working substance called fuel is electrochemically oxidized by $O_2$.

$$C_6{H}_{12}{O}_6+6H_{2}O\to 24e^{-}+24H^{+}+6{CO}_2$$

$$6O_2+24H^{+}+24e^{-}\to 12H_{2}O$$