Home
Class 11
CHEMISTRY
Liquid water freezes at 273K under exter...

Liquid water freezes at 273K under external pressure of 1 atm. The process is at equilibrium `H_(2)O (l) hArr H_(2)O (s)` at 273 K & 1 atm. However it was required to calculate the thermodynamic parameters of the fusion process occuring at same pressure & different temperature.Using the following data, answer the question that follow. `d_("ice") = 0.9` gm/cc, `d_(H_(2)O(l))` = 1 gm//c, `C_(P) [H_(2)O(s))] = 36.4 JK^(-1) mol^(-1)`
`C_(P) [H_(2)O(l)] = 75.3 JK^(-1) mol^(-1), Delta H_("fusion") = 6008.2 J mol^(-1)`
The value of ''`Delta H_("fusion")`'' at 263K & 1 atm will be

A

`+6008.2 J "mole"^(-1)`

B

`5619.2 J "mole"^(-1)`

C

`-5619.2 J "mole"^(-1)`

D

`6619.2 J "mole"^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
`Delta H_("fusion")` at 263and 1 atm will be occurred as follows: `"ice"_(263K) rarr "ice"_(273K) rarr H_(2)O_((l)_(273)) rarr H_(2)O_((l) 263)`
So `Delta H_("fusion")` at 263K = `Cp_("ice") xx Delta T + Delta H_("fusion")`
at `273- CP_(H_(2)O). Delta T`
`= 36.4 xx 10 + 6008.2 - 75.3 xx 10`
=5619.2 J/mole
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (PRACTICS SHEET (ADVANCED) MATRIX MATCHING TYPE QUESTIONS)|1 Videos

  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (PRACTICS SHEET (ADVANCED) INTEGER TYPE QUESTIONS)|3 Videos

  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (PRACTICS SHEET (ADVANCED) MORE THAN ONE CORRECT ANSWER TYPE QUESTIONS)|5 Videos

  • CHEMICAL THERMODYANMICS

    AAKASH SERIES|Exercise Questions For Descriptive Answers|28 Videos

  • ELECTRON MIGRATION EFFECTS

    AAKASH SERIES|Exercise QUESTIONS FOR DESCRIPTIVE ANSWERS|10 Videos

Similar Questions

Explore conceptually related problems

Liquid water freezes at 273K under external pressure of 1 atm. The process is at equilibrium H_(2)O (l) hArr H_(2)O (s) at 273 K & 1 atm. However it was required to calculate the thermodynamic parameters of the fusion process occuring at same pressure & different temperature.Using the following data, answer the question that follow. d_("ice") = 0.9 gm/cc, d_(H_(2)O(l)) = 1 gm//c, C_(P) [H_(2)O(s))] = 36.4 JK^(-1) mol^(-1) C_(P) [H_(2)O(l)] = 75.3 JK^(-1) mol^(-1), Delta H_("fusion") = 6008.2 J mol^(-1) '' DeltaS_("fusion") '' at 263 K & 1 atm will be

For the following equilibrium, H_(2) O(l) hArr H_(2) O(g) the increase in the pressure causes

What is the effect of increase of pressure on the following physical equilibrium? H_2O (s) leftrightarrow H_2O(l)

For a physical equilibrium, H_(2) O (Ice) hArr H_(2) O (Water ) which of the following is the true statement:

For the following process H _(2)O (l) (1 bar 373.15K) hArr H_(2)O (g) (1 bar, 373.15 K ) identify the correct set of thermodynamic parameters.

9.0g m ice at 0^(@)C is mixed with 36gm of water at 50^(@)C in a thermally insulated container, using the following data, answer the question that follow: C_(P (H_(2)O)) = 4.18 Jg^(-1) K^(-1), Delta H_("fusion") (ice) = 335 J g^(-1) Delta S_("ice") is

9.0g m ice at 0^(@)C is mixed with 36gm of water at 50^(@)C in a thermally insulated container, using the following data, answer the question that follow: C_(P (H_(2)O)) = 4.18 Jg^(-1) K^(-1), Delta H_("fusion") (ice) = 335 J g^(-1) Delta S_("water") is