Question

Zinc chloride on treating with sodium sulphide forms a .................. colored Zn precipitate.

• A. pink
• B. dense white
• C. black
• D. orange

Answer 1

The correct option is B dense white

A solution of a zinc salt (Zinc Chloride sol.) was mixed with an equal amount of another solution, which give a physical change, usually a colour change due to a precipitation of the zinc insoluble compound.
$ZnX-\left(aq\right)+Na+Y-\left(aq\right)\to Zn+Y-\left(s\right)+Na+X-\left(aq\right)$
A DENSE WHITE ppt was formed on treating it with sodium sulphide.