If a calibration curve of absorbance vs procaine hydrochloride concentration (mol l') is linear with the equation y = 24x for the derivatised procaine, what is the value of the molar absorptivity coefficient (emolar)? assume that a cuvette with a pathlength of 3 cm was used. (1 mark) y=24 emolar = _ l molo

8000 L/ mol cm is the value of the molar absorptivity coefficient.

Explanation:

The slope of the absorbance- concentration graph is equal to the product of path length and  molar absorptivity coefficient.

= Rate of change of absorbance with respect to concentration

= molar absorptivity coefficient

l = Path-length

Given the slope of graph of absorbance vs procaine hydrochloride concentration.

y = 240000 x (linear equation)

Path length of cuvette = 3 cm

The units of

8000 L/ mol cm is the value of the molar absorptivity coefficient.

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