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nikklg [1K]
3 years ago
8

The absorbance of a crystal violet solution in water (density is 1.00 g/mL) is measured in a 1.0 cm cuvette. The absorbance is 0

.614 and the molar absorptivity coefficient is The molecular weight of crystal violet is 407.98 g/mol. What is the molar concentration of the solution?
Chemistry
1 answer:
spin [16.1K]3 years ago
4 0

Answer : The molar concentration of solution is 7.06\times 10^{-6}mol/L

Explanation :

Using Beer-Lambert's law :

A=\epsilon \times C\times l

where,

A = absorbance of solution  = 0.614

C = molar concentration of solution = ?

l = path length = 1.0 cm

\epsilon = molar absorptivity coefficient = 87000M^{-1}cm^{-1}   (assume)

Now put all the given values in the above formula, we get:

0.614=(87000M^{-1}cm^{-1})\times C\times (1.0cm)

C=0.00000705747mol/L=7.06\times 10^{-6}mol/L

Therefore, the molar concentration of solution is 7.06\times 10^{-6}mol/L

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<h3>What is Empirical formula?</h3>

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