Question

What is the molar absorptivity () of benzoic acid at 228 nm? assume that the path length is 1. 00 cm

Answer 1

The molar absorptivity () of benzoic acid at 228 nm? assume that the path length is 1. 00 cm is = 11178 M-1. cm-1

We are given, absorbance spectrum and from that the absorbance of benzoic acid at 228 nm

Absorbance = 0.8

Now we need to calculate the molar absorptivity of benzoic acid at 228 nm

We know at the 228 nm the A = 0.8 and C = 8.74 mg/L.

We also given the l = 1 cm

Moles of benzoic acid = 0.00874 g / 122.12 g.mol-1

                                  = 7.16*10-5 moles

So, C of benzoic acid = 7.16*10-5 moles / L

We know the

ε = A/C*l

 = 0.80 / 7.16*10-5 M. 1 cm

 = 11178 M-1. cm-1

Learn more about  molar absorptivity here:-brainly.com/question/13350541

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