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3 January, 05:25

Use standard enthalpies of formation to calculate the change in enthalpy for dry ice sublimation. (the Î'hâf for co2 (s) is - 427.4kj/mol).

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  1. 3 January, 08:21
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    We need to know the change in enthalpy for dry ice sublimation.

    Change in enthalpy for dry ice sublimation is: + 427.4 KJ/mol

    The enthalpy of dry ice sublimation is the energy required to melt one mole of dry ice into liquid.

    Enthalpy of formation is opposite of enthalpy of sublimation.

    Given, enthalpies of formation is - 427.4 KJ/mol, so, enthalpy of sublimation = + 427.4 KJ/mol.
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