Question

Which of the following is not an oxidation-reduction reaction?

A. XeF6(s) ------> XeF4(s) + F2(g)

B. 2Cs(s) + I2(g) -----> 2CsI(s)

C. 2H2SO4(aq) + 2Ba(OH)2(aq) ------> 2BaSO4(s) + 4H2O(l) (Edit: This is the Correct Answer)

D. Zn(s) + 2AgNO3(aq) ------> Zn(NO3)2(aq) + Ag(s)

Answer 1

An oxidation-reduction reaction, also known as a redox reaction, involves the transfer of electrons between reactants. The reactant that loses electrons is oxidized, and the reactant that gains electrons is reduced.

Among the options you've provided, the reaction that is not an oxidation-reduction reaction is:

C. 2H2SO4(aq) + 2Ba(OH)2(aq) → 2BaSO4(s) + 4H2O(l)

In this reaction, there is no transfer of electrons between the reactants. While there are chemical changes occurring (formation of barium sulfate and water), it does not involve the typical electron transfer characteristic of oxidation-reduction reactions.