Question

17.Iron powder and sulphur powder were mixed together and divided into two parts A and B. When part A was heated strongly over burner, then a substance C was formed. The part B was, however, not heated at all. When dilute hydrochloric acid was added to substance C, then gas D was evolved and when dilute hydrochloric acid was added to part B then gas E was evolved (a) What type of substance is B? (b) What type of substance is C? (c) Name the gas (i) D, and (ii) E? (d) State one characteristic property of gas D. (e) Write one test to identify gas E

Answer 1

Answer:

(a) Mixture (fe+s)(b) compound (iron sulphite FeS) ( c) (i) Hydrogen sulphite

(ii) Hydrogen

( d) smell of rotten eggs ( e) burus with a pop sound