Analytical Chemistry Question 16
Question: A salt on treatment with dil. $ HCl $ gives a pungent smelling gas and a yellow precipitate. The salt gives green flame when tested. The salt solution gives a yellow precipitate with potassium chromate. The salt is
[MP PET 1996]
Options:
A) $ NiSO_4 $
B) $ BaS_2O_3 $
C) $ PbS_2O_3 $
D) $ CuSO_4 $
Show Answer
Answer:
Correct Answer: B
Solution:
$ B{a^{+2}}+2CH_3CO{O^{-}}\to {{(CH_3COO)}_2}Ba $
$ BaS_2O_3 $ gives $ SO_2 $ gas with dil. $ HCl $ and also yellow ppt. of Barium chromate. $ (CH_3COO)Ba+K_2CrO_4\to 2CH_3COOK+ $
$ \underset{\text{(yellow ppt}\text{.)}}{\mathop{BaCrO_4\downarrow }} $
BETA
