10 g of hydrogen and 64 g of oxygen were filled in a steel vessel and exploded. Amount of water produced in this reaction will be (AIPMT 2009)

2 2 2 2g 16g 18g 1mol 0..5mol 1mol H 1/ 2O H O → 10 g of H₂ = 5 mol and 64 g of O₂ = 2 mol In this reaction, oxygen is the limiting reagent so amount of H₂O produced depends on the amount of O₂. Since 0.5 mol of O₂ gives 1 mol of H₂O 2 mol of O₂ will give 4 mol of H₂O 55 MOLE & EQUIVALENT CONCEPT