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Title: Concentration vs Absorbance 08 ------------------ Y-axis: Absorbance 03 i 1.00E-2 ~8.90E-3 2.00E-3 4.00E- 3 6 .00E-3 8.00E-3 X-axis: Concentration Scale: X-axis: Concentration 1 division=0.500E-3 concentration units such as M Y-axis: Absorbance 1 division = 0.05 absorance unit
LLLLLL LLLLLL LLLLLLL LLLLLLLLLLLL LLLLLLL LLLLLL LLLLLLLLLLLLLLLLLLL LLLLLL LLLLLLL LLLLL To find concentration in of unkonw, we need to draw a line from 0.80 absorbance till it cross the calibration line. And from the crossection we need to draw a parpendicular to X-axis and where it cuts the X-axis gives us the value of concentration of unkown. The value is = ~ 8.90E-3 concentration units.
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