MHT CET Chemistry question
The heat of atomisation of methane and ethane are 360 kJ/mol and 620 kJ/mol, respectively. The longest wavelength of light capable of breaking the C-C bond is (Avogadro number , Js)
Answer: (B)
Solution
kJ/mol, so kJ/mol; \dfrac{hcN_A}{E}\dfrac{6.62×10^{-34} × 3×10^{8} × 6.02×10^{23}}{80×10^{3}}$ ≈ 1.49
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