chemistry homework

Question

Use the equation below to answer the following questions. Ba + ZnSO4 BaSO4 + Zn

 

a. Determine the oxidation state of the atoms in the equation's reactants and products: (6 points)

 

Oxidation state of Ba in reactant:

In product:

 

 

Oxidation state of Zn in reactant:

In product:

 

Oxidation state of S in reactant:

In product:

 

Oxidation state of O in reactant:

In product:

Answer 1

Reduction is a chemical change in which electrons are gained

Oxidation is a chemical change in which electrons are lost

 

in this reaction, Ba is reduced from Ba⁰ to Ba⁺⁺, and Zn is oxidized from Zn⁺⁺ to Zn⁰

 

by definition, Oxygen is fixed at O^--

 

in this reaction S is unchanged

 

Answer 2

Ba + ZnSO4 --->BaSO4 + Zn

Ba goes from 0 to 2+ so it has lost electrons; it has been oxidized and is the reducing agent

Zn goes from 2+ to zero so it has gained electrons; it has been reduced and is the oxidizing agent

 

Oxidation state of S is +6 in reactant and product

 

Oxidation state of O is -2 in reactant and product