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Question

Chemistry Question on d -and f -Block Elements

Ferric chloride is used to stop bleeding in cuts because

A

Fe3+Fe^{3+} coagulates blood which is positively charged sol

B

Fe3+Fe^{3+} coagulates blood which is negatively charged sol

C

Cl−Cl^{-} coagulates blood which is positively charged sol

D

Cl−Cl^{-} coagulates blood which is negatively charged sol

Answer

Fe3+Fe^{3+} coagulates blood which is negatively charged sol

Explanation

Solution

Ferric chloride is used to stop bleeding in cuts because Fe3+Fe ^{3+} coagulates blood which is negatively charged sol. As we know blood is a colloidal sol. On rubbing the injured part with Fe3+Fe ^{3+} then coagulation of blood takes place. Hence, main reason is coagulation, which stops bleeding.