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For the reaction A₂ + B₂ → 2AB, Ea(fwd) = 125KJ/mol and Ea(rev) = 85KJ/mol. Assuming the reaction occurs in one step,(b) calculate ΔH°rxn ;

Respuesta :

shristiparmar1221

The ΔH°rxn for the given reaction is 40 kJ.

What is Enthalpy of areaction ?

The Heat of Reaction (also known and Enthalpy of Reaction) is the change in the enthalpy of a chemical reaction that occurs at a constant pressure.

It is a thermodynamic unit of measurement useful for calculating the amount of energy per mole either released or produced in a reaction.

In the given Question, we have to use the reaction knowledge to calculate the value in joules of this reaction, like this:

Recalling how a chemical reaction works, we have the following information given:

Ea(forward) = 125 kJ/mol.

Ea(reverse) = 85 kJ/mol.

Then the formula for the enthalpy of a reaction is given by:

ΔH(reaction) = Ea(forward) - Ea(reverse).

ΔH(reaction) = 125 kJ/mol - 85 kJ/mol.

ΔH(reaction) = 40 kJ/mol

This is endothermic reaction as ΔH > 0.

Therefore, The ΔH°rxn for the given reaction is 40 kJ.

learn more about enthalpy here ;

brainly.com/question/7827769

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