A 10.00 ml volume of soft drink is treated with acid and molybdate and diluted to...
A 10.00 ml volume of soft drink is treated with acid and molybdate and diluted to 100.00 ml. Its absorbance is measured. From the following data, calculate the concentration of phosphate in the soft drink (mM).
Sample absorbance 0.2815
Slope of the calibration line: 5.82
Homework Answers
Solution:
When absorbance (A) is plotted against concentration, then slope
= 
l.
Thus,
A = slope x concentration
0.2815 = 5.82 x Concentration
Concentration = 0.2815 / 5.82 = 0.0484 M
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