Question

Limit test for iron purple color is due to formation of ________

a) Ferrous thiogycolate b) Glycolate

c) Ferric glycolate d) Glycollic acid​

Answer 1

ᗩᑎՏᗯᗴᖇՏ:-

limit test for iron purple color is due to formation of:-

☛ glycolic acid

ᕼOᑭᗴ ITᘔ ᕼᗴᒪᑭՏ ᑌᕼ__

Answer 2

Limit test for iron, purple color is due t the formation of Ferrous thioglycolate. (OPTION A)

LIMIT TEST -

• The reaction of iron with thioglycolic acid in the presence of citric acid.
• The reactant iron is dissolved in an ammonical solution to make the solution alkaline.
• The product formation is Ferrous thioglycolate.
• The product color ranges from pale pink to deep reddish-purple.
• Citric acid helps in the precipitation of iron from its ammonium complex.
• Thioglycolic acid helps in the oxidation of iron from oxidation state two to three.