Enthalpy of sublimation of iodine is 24 cal g–1 at 200°C. If specific heat of I2(s) and I2(vap) are 0.055 and 0.031 cal g–1K–1 respectively, then enthalpy of sublimation of iodine at 250°C in cal g–1 is :
a)
11.4
b)
2.85
c)
5.7
d)
22.8
a)
11.4
b)
2.85
c)
5.7
d)
22.8
Question ID - 56393 | SaraNextGen Top Answer Enthalpy of sublimation of iodine is 24 cal g–1 at 200°C. If specific heat of I2(s) and I2(vap) are 0.055 and 0.031 cal g–1K–1 respectively, then enthalpy of sublimation of iodine at 250°C in cal g–1 is :
a)
11.4
b)
2.85
c)
5.7
d)
22.8
Enthalpy of sublimation of iodine is 24 cal g–1 at 200°C. If specific heat of I2(s) and I2(vap) are 0.055 and 0.031 cal g–1K–1 respectively, then enthalpy of sublimation of iodine at 250°C in cal g–1 is :
|
a) |
11.4 |
b) |
2.85 |
|
c) |
5.7 |
d) |
22.8 |
1 Answer
127 votes
Answer Key / Explanation : (d) -
I2(s) → I2(g)
= 
+ (0.031 – 0.055) 50
= 24 − 50 
0.024
= 22.8
127 votes
Answer Link
127