Analytical Chemistry Question 9
Question: Phosphate radical with ammonium molybdate gives precipitate of which colour
Options:
A) Violet
B) Pink
C) Canary yellow
D) Green
Show Answer
Answer:
Correct Answer: C
Solution:
Phosphates give canary yellow precipitate with ammonium molybdate in the presence of conc. $ HNO_3 $
$ H_3PO_4+12{{(NH_4)}_2}MoO_4+21HNO_3 $
$ \underset{\text{(canary yellow ppt}\text{.)}}{\mathop{\underset{\text{ammonium phosphomolybdate}}{\mathop{{{(NH_4)}_3}PO_4.12MoO_3}}}}+21NH_4NO_3+12H_2O $
BETA
