noastalman noastalman

24-03-2020
Chemistry

contestada

Locate the ion that has no change in oxidation number in redox reactions.
a. What is the term applied to an ion that is present but does not enter into the actual chemical
reaction?
b. What ion in this equation is this type of ion?

Respuesta :

lavanyaande lavanyaande

31-03-2020

a. Spectator ions are the ones that are present but does not enter into the actual chemical reaction.

b. Na⁺ and NO₃⁻ ions are spectator ions involved in this above mentioned reaction

Explanation:

In redox reactions, for example reaction of aqueous silver nitrate and aqueous sodium chloride, silver chloride settles down as a precipitate by the addition of Ag⁺ ion from AgNO₃ and Cl⁻ ions from NaCl .
The other 2 ions that is NO₃⁻ ion and Na⁺ ion in the reaction do not enter into the reaction and they are called as Spectator ions.

This can be expressed as the following equation,

AgNO₃(aq) + NaCl(aq) →AgCl(s) + NaNO₃

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