Question

Hg 'X' is one of the ore of Hg. Write the method of extraction of it along with the chemical equation​

Answer 1

Answer:

X is Sulphide

HgS + O2 gives Hg + SO2

Answer 2

The given ore of mercury is cinnabar. Its formula is HgS and is called mercury (II) sulfide.

- Cinnabar (HgS), being a sulphide ore, is concentrated by froth floatation method.

- Following steps are involved in the process of extraction of mercury :

(1) In first step, the ore is roasted.

2HgS + 3O2  -----> 2HgO+ 2 SO2.

(2) In second step, the HgO is heated strongly at a 300-celsius temperature. HgO then decomposes at this temperature and pure mercury metal is obtained.

2HgO+ heat ------> 2Hg  + O2