Question

(HOTS)
In photosynthesis, 6 molecules of carbon dioxide combines with an equal number of water molecules through a complex series of reaction to give a molecule of glucose having a Molecular formula C6H12O6 .How many grams of water would be required to produce 18g of glucose. complute the volume of water so consumed assuming the density of water to be 1gm^(-3)

Answer 1

In the general chemical reaction of photosynthesis can be written as

 

$\bf 6CO_{2} +6H_{2}O \underset{Sunlight}{\xrightarrow{\text{\bf Chlorophyll}}}C_{6}H_{12}O_{6}+6O_{2}$

 

Molar mass of C₆H₁₂O₆ = 6 × 12 + 12 × 1 + 6 × 16

 

Molar mass of C₆H₁₂O₆ = 180 g/mol

 

From the above reaction we see that 1 molecule of glucose is formed from 6 molecules of water or, 180g of C₆H₁₂O₆ needs 108 g of H₂O (6 × molecular mass of H₂O = 6 × 18 = 108g )

 

$\bf 18g\:\: of \:\:C_{6}H_{12}O_{6}\:\: needs \:\:\frac{108}{180}\times18g = 10.8 g\:\: of\:\: H_{2}O$

 

$\bf Volume\:\:of\:\:water=\frac{Mass\:\:of\:\:water}{Density\:\:of\:\: water}$

 

$\bf Volume\:\:of\:\:water=\frac{10.8g}{1g\:cm^{-3}}$

 

$\bf Volume\:\:of\:\:water=\boxed{\boxed{10.8g^{-3}}}$

Answer 2

Answer:

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms' activities.

Explanation: