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Svetllana [295]
3 years ago
11

What is the overall enthalpy change DHrxn for the system?

Chemistry
2 answers:
Y_Kistochka [10]3 years ago
6 0

Your answer is 300 kJ

hope this helps! (:

damaskus [11]3 years ago
4 0

<u>Answer:</u> The overall enthalpy for the system is -1300 kJ.

<u>Explanation:</u>

Enthalpy change of the reaction is defined as the difference in the potential energy of the products and the potential energy of the reactants. This is represented as \Delta H_{rxn}

The equation used to represent enthalpy change of the reaction follows:

\Delta H_{rxn}=\Delta H_{products}-\Delta H_{reactants}

where,

\Delta H_{products} = potential energy of the products = [(-200) + (-300)]kJ = -500kJ

\Delta H_{reactant} = potential energy of the reactants = 800kJ

Putting values in above equation:

\Delta H_{rxn}=[-500-(800)]kJ=-1300kJ

Hence, the overall enthalpy for the system is -1300 kJ.

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