Question

Question 9 Referring to the equation below. how many grams of water could you produce if you are given 25 moles of CH4? CH4 + 202 -> CO2 + 2H20

Answer 1

The given reaction is

CH₄ + 2O₂$\rightarrow$ CO₂ + 2H₂O

given moles of CH₄ = 2.5 moles

as per the above reaction

1 mole of CH₄ gives 2 moles of H₂O

and one mole of water = 1 $\times$ 2 + 1 $\times$ 16 = 18 g H₂O

hence

1 mole of CH₄ produces 2 $\times$18 = 36 g of  H₂O

then

2.5 moles of CH₄ will produce 2.5 mol $\times$ 36 g H₂O = 90 g H₂O

So our answer is 90 g H₂O