Chemistry In Everyday Life Question 35
Question: Alizarin gives a red colour by mordanting it with the sulphate of a metal. The metal ion involved is
Options:
A) $ C{r^{3+}} $
B) $ F{e^{3+}} $
C) $ A{l^{3+}} $
D) $ S{n^{2+}} $
Show Answer
Answer:
Correct Answer: C
Solution:
“Alizarin” is a typical mordant dye gives different colours depending on the metal ion used, for example with $ A{l^{+3}} $ , alizarin gives a rose red colour. Co-ordination compound of alizarin with $ A{l^{+3}} $ as follow