The binding energy of a hydrogen molecule is 4.75 eV. Energy required to dissociate 0.05% of hydrogen gas at NTP occupying volume 5.6 litres is:

The binding energy of a hydrogen molecule is 4.75 eV. Energy required

1.	The binding energy of a hydrogen molecule is 4.75 eV. Energy required to dissociate 0.05% of hydrogen gas at NTP occupying volume 5.6 litres is:
Answer» 20 J nearly 30 J nearly 40 J nearly 60 J nearly Solution :Energy required to DISSOCIATE one molecule = `B.E. = 4. 75 XX 1.6 xx 10^(-19) J` Volume to be dissociated =`(5.6xx0.05)/100` Since 224 litre contain `6.02xx10^(23)` molecules. `THEREFORE` Number of molecules to be dissociated `therefore` Total energy required `=(6.02xx10^(23))/(22.4)xx(5.6xx0.05)/100xx4.75xx1.6xx10^(-19)` `=57.2J` Thus the correct CHOICE is (d).

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The binding energy of a hydrogen molecule is 4.75 eV. Energy required to dissociate 0.05% of hydrogen gas at NTP occupying volume 5.6 litres is:

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