Which of the following is a redox reaction? More than one answer may be correct. HBr(aq)...

Which of the following is a redox reaction? More than one answer may be correct.

HBr(aq) + KOH(aq) → H2O(l) + KBr(aq) SO3(g) + H2O(l) → H2SO4(aq)

HBr(aq) + Na2S(aq) → NaBr(aq) + H2S(g)

NH4+(aq) + 2 O2(g) → H2O(l) + NO3–(aq) + 2 H+(aq)

2 Na(s) + Cl2(g) → 2 NaCl(s)

None of the above are redox reactions.

Expert Solution

Equation (1), (2), (3) are not redox reactions because there is no change in oxidation States of atoms while going from reactants to products. I.e oxidation state of atoms remain same in reactants and products.

Equation (4), (5) are redox reactions as oxidation state of atoms are different in reactant and product side.

In 4) oxidized atom = N , reduced atom = O

In 5) oxidized atom = Na , reduced atom = Cl

queen_honey_blossom answered 11 months ago

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