A student's calibration curve for Blue #1 at 635 nm yields a straight line described by the equation y = 0.194 x + 0.025. If the measured absorbance for a solution of unknown concentration of Blue #1 is 0.293, what is the concentration of the Blue #1 solution? Provide your response to three digits after the decimal.

1.38 M is the concentration of blue solution.

Explanation:

The equation of calibration curve:

where,

A = absorbance of solution

C = concentration of solution

l = path length

= molar absorptivity coefficient

The graph between A and c will straight line with slope equal to prduct of .

y = 0.194 x + 0.025.

A = 0.194 c+ 0.025

Given the absorbance of solution :

A = 0.293

So, concentration at this value of absorbance will be= c

1.38 M is the concentration of blue solution.

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