Home
Class 11
CHEMISTRY
30.0 kJ of heat is required to melt 1mol...

`30.0 kJ` of heat is required to melt `1mol` of sodium chloride. The entropy change during melting is `15.05mol^(-1)K^(-1)`. Calculate the melting point of sodium chloride.

Text Solution

Verified by Experts

`Delta_("melting")S =(Delta_("melting")H)/(T)`
or `T = (Delta_("melting")H)/(Delta_("melting")S) = (30 xx 10^(3))/(15) = 2 kJ`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • THERMODYNAMICS

    CENGAGE CHEMISTRY|Exercise Ex 6.5|30 Videos

  • THERMODYNAMICS

    CENGAGE CHEMISTRY|Exercise Exercises (Subjective)|70 Videos

  • THERMODYNAMICS

    CENGAGE CHEMISTRY|Exercise Ex 6.3|27 Videos

  • STOICHIOMETRY

    CENGAGE CHEMISTRY|Exercise Archives Subjective|33 Videos

Similar Questions

Explore conceptually related problems

30.4 kJ of heat is required to melt 1 mol of sodium chloride.The entropy change during melting of 28.4 J mol^(-1)K^(-1) . Calculate the melting point of sodium chloride.

For liquid enthalpy of fusion is 1.435 kcal mol^(-1) and molar entropy change is 5.26 cal mol^(-1) K^(-1) . The melting point of the liquid is

Knowledge Check

  • Enthalpy of fusion of a liquid is 1.435Kcal mol^(-1) and molar entropy change is 5.26cal mol^(-1)K^(-1) Hence melting point of liquid is

    A
    `100^(@)C`
    B
    `0^(@)`
    C
    `373K`
    D
    `-273^(@)C`

  • Molar heat of vaporization of a liquid is 6kJ mol^(-1) . If the entropy change is 16 J mol^(-1) K^(-1) , the boiling point of the liquid is

    A
    `375^(@)C`
    B
    375 K
    C
    273 K
    D
    `102^(@)C`

  • The latent heat of melting of ice at 0^(@)C is 6 kJ "mol"^(-1) . The entropy change during the melting in JK^(_1) "mol"^(-1) is closest to-

    A
    22
    B
    11
    C
    `-11`
    D
    `-22`

    • Similar Questions

    Explore conceptually related problems

    Latent heat of fusion of ice is 6kJ mol^(-1) . Calculate the entropy change in the fusion of ice.

    One mole of NaCl (s) on melting absorbed 30.5 KJ of heat and its entropy is increased by 28.8 JK^(-1) . What is the melting point of sodium chloride ?

    One mole of NaCl(s) on melting observed 30.5 kJ of heat and its entropy is increased by 28.8 JK^(-1) . What is the melting point of sodium chloride ?

    The entropy change for eaction at 300 K is 120 Jk^(-1) mol^(-1) . What is the enthalpy change for the reaction ?

    The melting point of sodium chloride is more than that of sodium. Justify.

    Home
    Profile