Analytical Chemistry Question 191
Question: Mixture is heated with dil. $ H_2SO_4 $ and the lead acetate paper turns black by the evolved gases. The mixture contains
Options:
A) Sulphite
B) Sulphide
C) Sulphate
D) Thiosulphate
Show Answer
Answer:
Correct Answer: B
Solution:
It must be sulphide as $ Pb{{(CH_3COO)}_2}\ +\ H_2S\underset{(\text{Black }ppt\text{.)}}{\mathop{\to PbS+}}2CH_3COOH $
BETA
