Question

Hydrogen gas reacts with chlorine gas, to produce hydrogen chloride, HCl. H2 (g) + Cl2 (g) → 2 HCl (g) How many molecules of HCl are produced from 100.0 g Cl2? (ans: 1.70 x 10²⁴ HCl molecules)

Answer 1

- H₂(g) + Ug (g) → 2H U (y) Let x be the number of molecules of Hu Produced by 100g of U. Tig of U, gives → 2X 6.0 23x10 23 molecules a gives - loog of x Cross multiply 23 7x= 100x 9 x 6.023 x 10 - x= 1.70810 24 molecules