Tuesday, June 18, 2024
Home Uncategorized A small bag of powdered material is often placed in the food packaging box, which has moisture-proof and anti-oxidation effects on the food at the same time. Food packaging purchased by a classmate from the supermarket

A small bag of powdered material is often placed in the food packaging box, which has moisture-proof and anti-oxidation effects on the food at the same time. Food packaging purchased by a classmate from the supermarket

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(1) iron products are easy to rust, and iron oxide is a reddish brown solid, so it is speculated that the powdery material may be iron oxide; Its action principle is that iron rusts in the presence of water and oxygen
(2) ferric oxide reacts with sulfuric acid to form ferric sulfate and water, and the ferric sulfate solution is yellow.
so the answer is:
(1) Fe2O3; The principle is: iron rusts in the presence of water and oxygen.
(2) H2SO4; The solution is yellow; Fe2O3+3H2SO4=Fe2(SO4)3+3H2O.

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