Home
Class 11
CHEMISTRY
The amount of energy when million atoms ...

The amount of energy when million atoms of iodine are completely converted into `I^(-)` ions in the vapour state according to the equation,`I_((g))+e^(-)`to`I^(-)_((g)) ` is `4.9X10^(-13)` J.What would be the electron gain enthalpy of iodine in terms of KJ `mol^(-1)` and eV per atom?

A

`295,3.06`

B

`-295-3.06`

C

`439,5.09`

D

`-356,-7.08`

Text Solution

Verified by Experts

The correct Answer is:
B
The electron gain enthalpy of iodine is equal to the energy released when 1 mole of iodine atoms in vapour state is converted into `I^(-)` ions `Delta_(eg)H=(4.9)xx(10)^(-13)xx6.023xx10^(23)/(10)^(6)=29.5xx10^(4) J mol^(-1)
295 KJ mol^(-1)`
Thus,electron gain enthalpy of iodine=`-295 KJ mol^(-1)` We know that ` eV per atom=96.49 KJ `mol^(-1)`
`therefore`Electron gain enthalpy of iodine in eV per atom
`=-(295)/(96.49)=3.06 eV per atom.
Promotional Banner

Topper's Solved these Questions

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY

    NCERT FINGERTIPS|Exercise NCERT Exemplar|12 Videos

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY

    NCERT FINGERTIPS|Exercise Periodic Trends In Properties Of Elements|59 Videos

  • CHEMICAL BONDING & MOLECULAR STRUCTURE

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • ENVIRONMENTAL CHEMISTRY

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

The amount of energy when millon atoms of iodine are completely converted into I^(-) ions in the vapour state according to the equation, I(g) +e^(-)(g) rarr I^(-)(g) is 5.0 xx 10^(-13)J .

The amount of energy released when 1 xx10^10 atoms of chlorine in vapour state are converted to Cl^(–1) ions according to the equation, Cl(g) + e^(-) to Cl^(-) (g) " is " 57.86 xx 10^(-10) J Calculate the electron gain enthalpy of chlorine atom in terms of kJ "mol"^(–1 ) and eV per atom.

the amount of energy released when 10^(6) atoms of iodine in vapour state are converted to I^(-) ions is 4.8 xx 10^(-13) J . What is the electron affinity of iodine in ev/atom.

The amount of energy released when 10^(12) atoms of Cl vapours are converted to Cl^(ɵ) ions, according to the equation : C_((g))+e^(-) rarr Cl_((g))^(ɵ) is 58 xx 10^(-10)J Calculate the Delta_(eg)H^(ɵ) of Cl atom in kJ mol^(-1) and eV "atom"^(-1) .