sabrinasmith

I am doing an experiment and received much lower results for the titrated iron content when using ferrous fumarate and bisglycinate versus ferrous gluconate. It was titrated using potassium permanganate. I need to be able to: 1. List the stoich reactions for each compound when they were reacted with dilute (1.0M) sulphuric acid to create Fe2+ ions 2. Explain why ferrous gluconate gave me the most accurate iron content results when compared to the listed amount on the bottle Any insight is appreciated!