Question

80 g of hydrogen is reacted with 80 g of oxygen to form water.Find out the mass of water obtained

Answer 1

• 4 g Hydrogen requires 32 g oxygen for complete oxidation.
• 80 g Hydrogen requires 640 g but we have only 80 g oxygen, so oxygen is the limiting reagent.

32 g oxygen gives 36 g water,

80 g oxygen gives,

mass of water=(36×80)/(32)=90 g