Calculate energy of one mole of photon of radiations whose frequency is 5×1014Hz.
Energy of one photon is given by the expression E=hv
E=(6.636×1034Js−1×5×1014s−1)
=33.18×1020J
One mole of photon =6.023×1023 photons
Therefore, Energy of one mole of photon =(6.023×1023×33.18×10−20J)=199.84×103 J
Energy of one mole of photon =199.84 kJ