Analytical Chemistry Question 194
Question: Which of the following statements is incorrect-
Options:
A) $ F{e^{2+}} $ ion also gives blood red colour with $ SC{N^{-}} $ ion.
B) $ F{e^{3+}} $ ion also gives blood red colour with $ SC{N^{-}} $ ion.
C) On passing $ H_2S $ into $ Na_2ZnO_2 $ solution a white ppt of ZnS is formed.
D) Cupric ion reacts with excess of ammonia solution to give deep blue colour of $ {{[Cu{{(NH_3)}_4}]}^{2+}} $ ion.
Show Answer
Answer:
Correct Answer: A
Solution:
[a] Only $ F{e^{3+}} $ ions give blood red colouration with $ SC{N^{-}} $ ions. $ F{e^{3+}}+SC{N^{-}}\xrightarrow{{}}\underset{( darkred )}{\mathop{{{[Fe(SCN)]}^{2+}}}} $
BETA
