Enthalpy of sublimation of iodine is 24 c a l g - 1 at 200 ° C . If specific heat of I 2 (s) and I 2 (vap) are 0.055 and 0.031 c a l g - 1 K - 1 respectively, then enthalpy of sublimation of iodine at 250 ° C in c a l g - 1 is:

Question

Enthalpy of sublimation of iodine is 24 c a l g - 1 at 200 &#176; C . If specific heat of I 2 (s) and I 2 (vap) are 0.055 and 0.031 c a l g - 1 K - 1 respectively, then enthalpy of sublimation of iodine at 250 &#176; C in c a l g - 1 is:

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Correct answer: C. 22.8

I 2 s &#8594; I 2 g &#916; H 250 o C - &#916; H 200 o C = &#916; C p m T 2 - T 1 &#916; H 250 o C - 24 = 0.013 - 0.055 &#215; 50 &#916; H 250 o C - 24 = - 1.2 ( &#916; H ) 250 o C = 22.8 &#8201; J / g m

Enthalpy of sublimation of iodine is 24 c a l g - 1 at 200 ° C . If specific heat of I 2 (s) and I 2 (vap) are 0.055 and 0.031 c a l g - 1 K - 1 respectively, then enthalpy of sublimation of iodine at 250 ° C in c a l g - 1 is:

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More from Thermodynamics (C)

Enthalpy of sublimation of iodine is 24 c a l g - 1 at 200 &#176; C . If specific heat of I 2 (s) and I 2 (vap) are 0.055 and 0.031 c a l g - 1 K - 1 respectively, then enthalpy of sublimation of iodine at 250 &#176; C in c a l g - 1 is:

Options

Correct answer

Step-by-step solution

More from Thermodynamics (C)

Enthalpy of sublimation of iodine is 24 c a l g - 1 at 200 ° C . If specific heat of I 2 (s) and I 2 (vap) are 0.055 and 0.031 c a l g - 1 K - 1 respectively, then enthalpy of sublimation of iodine at 250 ° C in c a l g - 1 is: