green plants chemical reaction

Question

Green plants use light from the Sun to drive photosynthesis, a chemical reaction in which liquid water and carbon dioxide gas form aqueous glucose (C6H12O6) and oxygen (O2) gas. Calculate the moles of water needed to produce 1.1 mol of glucose. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits.

Answer 1

6.6 moles of H₂O (l)

The balanced equation for photosynthesis is:

6CO₂ (g)+ 6H₂O (l)→ C₆H₁₂O₆ (aq)+ 6O₂ (g).

The molar ratio of water : glucose is 6:1.

So, to find the moles of water needed to produce 1.1 moles of glucose, just do 1.1*6= 6.6 moles H₂O (l).

Let me know if that helps!