Question

which gas is evolved in in the compound of iron and sulphur if dilute hcl is added​

Answer 1

Explanation:

As part 'A' is heated, a compound FeS is formed by the reaction between iron filings and sulphur. When dilute HCI is added to part A, FeS will react with dil HCI to form H2S gas which has smell of rotten eggs and will turn lead acetate paper black.