7. (a) Explain why- (i) UV-vis is typically recorded broad absorption maxima and not single, sharp lines; (ü) ^max for is lower than that of =CH–CH= (iüi) Amax values obtained for acetone occurs at 279 nm, in n-hexane, 270 nm in ethanol, and at 265 nm in water; (iul phonelete ion hea 1 ot 297 nm

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( do i and ii )
7. (a) Explain why-
(i) UV-vis is typically recorded
broad absorption maxima and not
single, sharp lines;
(ü) ^max for
is lower than
that of
=CH–CH=
(iüi) Amax values obtained for acetone
occurs at 279 nm, in n-hexane,
270 nm in ethanol, and at 265 nm
in water;
(iv) phenolate ion has max at 287 nm
while phenol has ^max at 270 nm.
Transcribed Image Text:7. (a) Explain why- (i) UV-vis is typically recorded broad absorption maxima and not single, sharp lines; (ü) ^max for is lower than that of =CH–CH= (iüi) Amax values obtained for acetone occurs at 279 nm, in n-hexane, 270 nm in ethanol, and at 265 nm in water; (iv) phenolate ion has max at 287 nm while phenol has ^max at 270 nm.
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