Which of the following is not an oxidation reduction reaction a) xef6(> xef4(s)+f2(g) b) 2cs(s)+i2(> 2csl(s) c) 2h2so4(aq)+ 2ba(oh)2(> 2baso4(s)+4h2o(i) d) zn(s)+> zn(no3)2(aq)+ag(s)

C) 2H2SO4(aq)+ 2Ba(OH)2(aq)>2BaSO4(s)+4H2O(I)

Explanation:

The reaction proper:

     2H₂SO₄ + 2Ba(OH)₂ → 2BaSO₄ + 4H₂O

The above reactions is a typical acid-base neutralization reaction.

A reaction in which oxidation-reduction did not take place is called a non-redox reaction. In such a reaction, there is no transfer of electrons between reactants, that is, none of the atoms of the reactants changes its oxidation number in forming the products.

   Most neutralization reactions are non-redox reactions.

answer: - 3.) the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

solution: - as per the rules, oxidation number of oxygen in its compounds is -2. the sum of oxidation numbers of all the elements of a molecule or compound is zero.

also, the oxidation number in elemental form is zero.

in no, the oxidation number of o is -2 so the oxidation number of n is +2 so that the sum is zero.

similarly, the oxidation number of c in co is +2 and o is -2.

on product side the oxidation number of n is 0 as it is in the elemental form() .

oxidation number of c in carbon dioxide is +4 as there are two oxygen in it and we know that each oxygen is -2.

so, oxidation number of n is changing from +2 to 0 and the oxidation number of c is changing from +2 to +4.

since nitrogen is reduced and hence no is acting as an oxidizing agent. carbon is oxidized and so co is acting as a reducing agent.

so, the right choice is number 3.)the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

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