Is NaBr+I2 -> NaI+Br2 a single replacement

Is not a single replacement

A single replacement reaction is a chemical reaction in which one element replaces the other elements of a compound to produce new elements and compounds

Reactions

A+BC--> AC+B

Metal halogens can force metal halide ions in the order F> Cl> Br> I

Oxidation : F₂> Cl₂> Br₂> I₂

Reaction

NaBr+I₂ -> NaI+Br₂

Then the reaction will not occur because I₂ cannot oxidize Br, or the reaction is said to be non-spontaneous

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explanation:

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.