Thermochemistry help!?

Calculate the standard enthalpy change for the reaction

2A+B⇌2C+2D

Use the following data:

Substance     ΔH∘f

(kJ/mol)

A

    -261

B

    -393

C

    189

D

    -497

Express your answer in kilojoules.

1 Answer

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  • Anonymous
    2 months ago

    standard enthalpy change = (2 * 189 + 2 * (-497)) - (2 * (-261) + 1 * (-393))

     

    Units are kJ/mole.  You can't get kJ without a quantify which you have not provided.

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