Respuesta :
Answer:
The wavelength of sunlight is required to break the bond in one oxygen molecule is 242 nm.
Explanation:
Energy required to break the 1 mol oxygen-oxygen bond:
=495 kJ=495000J
1 mol = [tex]6.022\times 10^{23}[/tex] molecules
Energy required to break 1 molecule of oxygen molecule= E
= [tex]E=\frac{495000 J}{6.022\times 10^{23}}=8.219\times 10^{-19} J[/tex]
The energy required to break the 1 molecule of oxygen is equal to enrgy of one photon of a sunlight.
[tex]E=\frac{h\times c}{\lambda}[/tex]
where,
[tex]\lambda [/tex] = wavelength of the light
E = energy of the photon
h = Planck's constant = [tex]6.63\times 10^{-34}Js[/tex]
c = speed of light = [tex]3\times 10^8m/s[/tex]
[tex]\lambda=\frac{h\times c}{E}[/tex]
[tex]\lambda =\frac{6.63\times 10^{-34}Js \times 3\times 10^8m/s}{8.219\times 10^{-19} J}=2.42\times 10^{-7} m=242 nm[/tex]
The wavelength of sunlight is required to break the bond in one oxygen molecule is 242 nm.
