what oxidation changes does the iron undergo? course hero

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Q1) What oxidation changes does the iron undergo? Write the corresponding balanced half-reaction.

Expert Answer

On oxidation Fe2+ is oxidised to Fe3+. Oxidation is loss of election. Reaction is Fe2+ => Fe3+ + e- b) A view the full answer

How does oxidation occur?

Oxidation involves an increase in the oxidation number of an atom. Reduction occurs when the oxidation number of an atom decreases. According to this model, CO 2 is reduced when it reacts with hydrogen because the oxidation number of the carbon decreases from +4 to +2.

Which group of nonmetals is in the oxidation state of -1?

The nonmetals in Group VIIA often form compounds (such as AlF 3, HCl, and ZnBr 2 ) in which the nonmetal is in the -1 oxidation state. The sum of the oxidation numbers of the atoms in a molecule is equal to the charge on the molecule. The most electronegative element in a compound has a negative oxidation number.

What is the process of discovery?

The Process of Discovery: Oxidation and Reduction. The first step toward a theory of chemical reactions was taken by Georg Ernst Stahl in 1697 when he proposed the phlogiston theory, which was based on the following observations. Metals have many properties in common. Metals often produce a "calx" when heated.

Why is oxygene called oxygene?

He chose this name because the products of the combustion of nonmetals such as phosphorus are acids when they dissolve in water.

Why did the weight increase after the phlogiston?

Stahl explained it by suggesting that the weight increased because air entered the metal to fill the vacuum left after the phlogiston escaped. The phlogiston theory was the basis for research in chemistry for most of the 18th century.

How to make metals in Calx?

Metals can be made by adding phlogiston to the calx.

What are some examples of oxidation reduction?

We find examples of oxidation-reduction or redox reactions almost every time we analyze the reactions used as sources of either heat or work. When natural gas burns, for example , an oxidation-reduction reaction occurs that releases more than 800 kJ/mol of energy.