D-And F-Block Elements Ques 484
Question: A blue colouration is not obtained when
Options:
A) ammonium hydroxide dissolves in copper sulphate.
B) copper sulphate solution reacts with $ K_4[ Fe{{( CN )}_6} ]. $
C) ferric chloride reacts with sod. ferrocyanide.
D) anhydrous $ CuSO_4 $ is dissolved in water.
Show Answer
Answer:
Correct Answer: B
Solution:
$ 2CuSO_4+K_4[ Fe{{( CN )}_6} ]\xrightarrow{{}} $ $ \underset{Chocolateppt.}{\mathop{Cu_2[ Fe{{( CN )}_6} ]+2K_2SO_4}}, $
