Question

State one appropriate observation when 0
(i) Copper sulphide is treated with di...
hydrochloric acid.
Supud H2S is
h otten egg
(ii) A few drops of dil. HCl are added to AgNO,
solution, followed by addition of NH OH
solution.
Ell in the blank from the choices in the bracket :
uicklime is not used to dry HCl gas because​

Answer 1

Answer:

i)The black coloured copper sulphite turns blue and hydrogen sulphide gas is liberated.

CuS+dil.HCl→CuCl2+H2S

Hope dis helps...

Answer 2

Answer:

(i) A gas is evolved with rotten egg smell which turn lead acetate paper silvery black

(ii) Curdy white PPT observed which is soluble in NH4OH

(iii) Quicklime is not used to dry HCL gas because it react with it as HCL gas is acidic while quick lime is basic in nature