QJEEM23Ch6bd1: JEE Main 2023 Chemistry - Class 11 JEEM23Ch6bd1 Solution: The energy of one mole of photons of radiation of frequency 2 × …

Question

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The energy of one mole of photons of radiation of frequency $2 \times 10^{12} Hz$ in $J {mol}^{- 1}$ is ___________. (Nearest integer)

[Given : $h = 6.626 \times 10^{- 34} Js$

$N_{A} = 6.022 \times 10^{23} {mol}^{- 1}$ ]

Accepted Answer

$E = nhv$

$= (6.022 \times 10^{23}) (6.626 \times 10^{- 34}) \times (2 \times 10^{12})$

$= 798.03$ J

$\approx$ $798$ J

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