What chemical reaction is happening when potassium manganate VII is added to Glucose and H2SO4?
Concentrated sulfuric acid reacts with KMnO4 to give Mn2O7, which can be explosive. But if the KMnO4 is being used in small amounts as an indicator, basically, it changes from purple to clear as the acid is reduced and used up in the reaction of the sugar. The result is 12 Carbons and 11 HOH water molecules that are so heated that they steam out of solution, leaving a large black carbon mess.