One milligram of a compound of molecular weight 160 is dissolved in 10 ml of ethanol, and the solution is poured into a 1-cm uv cell. the uv spectrum is taken, and there is an absorption at = 247 nm. the maximum absorbance at 247 nm is 0.50. calculate the value of for this absorption.

The value of molar absorptivity of the compound is .

Explanation:

Using Beer-Lambert's law :

A = absorbance of solution

C = concentration of solution =

l = path length = 1.00 cm

= molar absorptivity coefficient

Moles of compound =

Volume of the solution = 10 mL = 0.010 L

A = 0.50 , l = 1 cm

The value of molar absorptivity of the compound is .

true

explanation:

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