Redox Reaction Stoichiometry
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Questions and Answers

What is the oxidation number of an atom in a chemical compound or polyatomic ion?

The theoretical ion charge of the atom.

What is the fundamental property of redox reactions?

One participant will be oxidised and another participant will be reduced by the transfer of one or more electrons.

What happens when a particle is reduced?

Its oxidation number decreases.

What is the sum of a reduction reaction and an oxidation reaction?

<p>A redox reaction.</p> Signup and view all the answers

Why are Roman numbers used for oxidation numbers?

<p>To avoid confusion with charges of ions.</p> Signup and view all the answers

What is the oxidation number of Fe3+ in the reaction Fe3+ + e- → Fe2+?

<p>+III</p> Signup and view all the answers

What is the effect of the decrease in ON of 2 in the oxidation reaction?

<p>O has been reduced to O2-</p> Signup and view all the answers

Why is it necessary to multiply the oxidation reaction by 2 in the given example?

<p>To balance the number of electrons, as the reduction reaction requires 4 electrons, but the oxidation reaction only produces 2 electrons.</p> Signup and view all the answers

What is the purpose of including H+/H3O+ ions in redox reactions?

<p>To balance the equation at acidic reaction conditions.</p> Signup and view all the answers

What is the role of OH- ions in redox reactions?

<p>To balance the equation at basic reaction conditions.</p> Signup and view all the answers

What is the significance of considering stoichiometry in redox reactions?

<p>To ensure the correct number of electrons is transferred and the reaction is balanced.</p> Signup and view all the answers

Why is it necessary to balance the charge and amount of substance in redox reactions?

<p>To ensure the reaction is valid and meaningful.</p> Signup and view all the answers

What is the redox potential of the Fe2+/Fe redox pair?

<p>-0.440 ±0.000 V</p> Signup and view all the answers

In a redox reaction, what is the oxidising partner also known as?

<p>Oxidant, Oxidiser, or Oxidising Agent</p> Signup and view all the answers

What is the oxidation number of oxygen in a compound, such as MO?

<p>-II</p> Signup and view all the answers

What happens to the oxidation number of a metal (M) during the reaction of M with oxygen to form a metal oxide?

<p>The oxidation number increases by 2, from ±0 to +II</p> Signup and view all the answers

What is the condition necessary for a redox reaction to occur?

<p>One or more electrons must be transferred</p> Signup and view all the answers

What is the oxidation number of a metal (M) in its elemental form?

<p>±0</p> Signup and view all the answers

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