Analytical Chemistry Question 70
Question: A mixture of two salts is not water soluble but dissolves completely in dilute hydrochloric acid to form a colourless solution. The mixture could be
[Pb. PMT 1998]
Options:
A) $ AgNO_3 $ and $ KBr $
B) $ BaCO_3 $ and $ ZnS $
C) $ FeCl_3 $ and $ CaCO_3 $
D) $ Mn{{(NO_3)}_2} $ and $ MgSO_4 $
Show Answer
Answer:
Correct Answer: B
Solution:
$ BaCO_3+2HCl\to BaCl_2+H_2O+CO_2 $
$ ZnS+2\underset{\text{(dil}\text{.)}}{\mathop{HCl}}\to ZnCl_2+H_2S $
BETA
