Question

Chlorine is prepaired in the kaboratory by treating manganese dioxide (Mno2) with aqueous hydrochloric acid according to the reaction

4HCl (aq) +Mno2 (s) -> 2H2O +MnCl2 + Cl2
how many grams of HCl react with 5 gm of manganese dioxide​

Answer 1

Answer:

Molecular weight of Mno2 = 87 g

Molecular weight of Hcl = 4 * 36.5 = 146 g

According to chemical reaction

1 g of Mno2 reacts with 4g of Hcl togive = 146/87 * 1

Or

5 g of Mno2 reacts with 4g of Hcl to give = 146/87 *5 = 8.4 g of Hcl

Hence, 8.4 g of HCl will react completely with 5.0 g of manganese dioxide.