Question

The presence of which reactant is the best indicator of an oxidation-reduction reaction? KNO3 H2SO4 NaOH H2

Answer 1

The presence of which reactant is the best indicator of an oxidation-reduction reaction?
KNO3H2SO4NaOHH2

H2!

Answer 2

Answer;

Hydrogen gas (H2)

Explanation;

• Oxidation involves the loss of electrons while reduction is the gaining of electrons. Oxidation-reduction reaction is a reaction which involves the gaining of electrons and loss of electrons.
• Oxidation may also be referred to as increase in the oxidation state of an atom while reduction is the decrease of oxidation state of an atom.
• The presence of hydrogen gas as a reactant is a best indicator of an oxidation-reduction reaction. This is because in hydrogen gas hydrogen has a zero oxidation number which may increase to show oxidation or may decrease to show reduction after the reaction.