Answer to Question #22096 in Inorganic Chemistry for khadijah

Question

a. Identify the limiting reagent when 15.0 g of H2 reacts with 48.0 g of O2 to produce water.
b. What is the mass of water produced?

Answer 1

2H₂ + O₂ = 2H₂O

n(H₂) = m/M

n(H₂) = 15g/2g/mol = 7,5 mol

n(O₂) = 48g/32g/mol = 1,5 mol

a. The limiting reagent is O₂

n(H₂O) =1,5 mol

M(H₂O) = 2*1 + 16 = 18 g/mol

m(H₂O) = 18g*1,5 mol = 27g

b.The mass of water produced is 27g.