The enthalpy of formation of gaseous iodine is 62.5 kJ mol–1 at 25°C. What will be the enthalpy of sublimation of iodine at 25°C?

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Shiksha Nation · Accepted Answer

Enthalpy of Sublimation Definition
    
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By definition of enthalpy of formation, I2(s) &rarr; I2(g), &Delta;fH = 62.5 kJmol&minus;1

This is also the enthalpy of sublimation by definition.

Hence, &Delta;fH (I2, g) = &Delta;subH (I2, s)

The enthalpy of formation of gaseous iodine is 62.5 kJ mol–1 at 25°C. What will be the enthalpy of sublimation of iodine at 25°C?

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