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Which of the following answer correctly identifies the reduction-oxidation reaction below and gives the correct reasoning?

*The choices are shown in image

Answer choices-

a )Reaction I. The oxidation state of Na(s) and Cl2(g) both change.
b) Reaction II. The Co2+ in Co(NO3)2 (aq) changes from aqueous to solid in CoI2 (s).
c) Reaction III. The C in NaHCO3 (s) changes to a gas in CO2 (g).
d) Reaction IV. The sodium is changing state.

Which of the following answer correctly identifies the reductionoxidation reaction below and gives the correct reasoning The choices are shown in image Answer c class=

Respuesta :

ardni313

The correct answer : reaction 1

Further explanation

Given

Chemical reaction

Required

The reduction-oxidation reaction

Solution

  • Reaction 1

The reduction-oxidation reaction

Na oxidation, from 0 to +1

Cl reduction, from 0 to -1

  • Reaction 2

The oxidation number of Co does not change, remains +2, and the reaction is not oxidation-reduction but double displacement

  • Reaction 3

The oxidation number C does not change constantly +4 in either NaHCO3 or CO2 compounds, and the reaction is a decomposition reaction

  • Reaction 4

The oxidation number of Na remains unchanged at +1 in either NaOH or NaC2H3O2 compounds, and the reaction is a neutralization reaction