InterviewSolution
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InterviewSolution
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Certain sum glasses having small of `AgCl` incroporated the lenses, on expousure to light of appropriate wavelength turns to gray colour to reduce the glare following the reactions: `AgCloverset(hv)(rarr) Ag("Gray")+Cl` If the heat of reaction for the decomposition of `AgCl` is `248 kJ mol^(-1)`, what maximum wavelength is needed to induce the desired process? |
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Answer» Energy needed to change `=248xx10^(3) J//mol` If photons is used for this purpose, then according to Einstein law one molecule absorbs one photon. Therefore, `:. N_(A).(hc)/(lambda)=248xx10^(3)` `lambda=(6.626xx10^(-34)xx3.0xx10^(8)xx6.023xx10^(23))/(248xx10^(3))=4.83xx10^(-7) m` |
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