Photosynthesis of a carbohydrate in plants is given by chemical equation:
$6 C O_{2} + 6 H_{2} O ⟶ C_{6} H_{12} O_{6} + 6 O_{2}$
If you have net result as:
$6 C O_{2} + 6 H_{2} O ⟶ C_{6} H_{12} O_{6} + 6 O_{2}$
Check whether this reaction is correct or not.

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Solution

No, $O_{2}$ (product is from $H_{2} O$ (reactant), hence $12 H_{2} O$ is taken as reactant. It is confirmed by taking isotopic $O^{18}$ when all $O^{18}$ appear in $O_{2}$ .
$6 C O_{2} + 6 H_{2} O^{18} ⟶ C_{6} H_{12} O_{6} + 6 H_{2} O + 6 {O_{2}}^{18}$

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C_{6} H_{12} - ----- - O_{6} + {6 O}_{2} ⟶ □ + □ + □

{CaCO}_{3} \underset{}{\to} CaO + {CO}_{2}

2 H_{2} O \underset{}{\to} 2 H_{2} + O_{2}

6 {CO}_{2} + 6 H_{2} O \underset{}{\to} C_{6} H_{12} O_{6} + 6 O_{2}

C_{6} H_{12} O_{6} + 6 O_{2} \underset{}{\to} 6 {CO}_{2} + 6 H_{2} O

C_{6} H_{12} O_{6}

C_{6} H_{12} O_{6}

6 O_{2}

6 C O_{2}

6 H_{2} O

6 C O_{2} + 12 H_{2} O s u n l i g h t - ----- \to c h l o r o p h y l l C_{6} H_{12} O_{6} + 6 H_{2} O + 6 O_{2} ↑

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