Question

If 10 g of h2 reacts with 50g of o2 are mixed toproduce h2o calculate the amount of pf h2oand the amount of unreacted reagent

Answer 1

) Calculate moles:

sucrose ⇒ 0.0292146 mol 
oxygen ⇒ 0.3125 mol

2) Divide by coefficients of balanced equation:

sucrose ⇒ 0.0292146 mol / 1 mol = 0.0292146 
oxygen ⇒ 0.3125 mol / 12 mol = 0.02604

Oxygen is the lower value. It is the limiting reagent.