Explain standard enthalpy of subslimation [Delta_("sub")H^(@)).

1.	Explain standard enthalpy of subslimation [Delta_("sub")H^(@)).
Answer» Solution :It is defined to the CHANGE in enthalpy when one MOLE of a solid substance sublimes at a constant temperature and standard pressure (1 bar) Example : `CO_(2(g)) rarr CO_(2(g)) , Delta_("sub")H^(@) = 25.2 kJ mol^(-1)`.

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