Question

For the formation of 3.65g of hydrogen chloride gas ,what volumes of hydrogengas and chlorine gas are required at STP ( 273 K, 1bar )

Answer 1

H₂ + Cl₂ → 2 HCl

1 V 1 V 2 V

Now 71g HCl is obtained from = 22.4 L of Cl₂

1g HCl is obtained from =22.4/71

3.65g HCl is obtained from = 22.4 × 3.65 /71

= 1.15 L of Cl₂

Hence 1.15 L of Cl₂ and H₂ are used for formation of HCl