Amount of Emission is directly related to concentration of the Cadmium in the solution [Beer lambert's law]
Since there is a direct relationship, we plot the volume versus emission values and try to ensure drawing a straight line covering maximum points and once the straight line is obtained, we draw a perpendicular starting from the emission value of unknown on y-axis onto the graph line and from the intersection point further drop a perpendicular onto x-axis which intersects at 0.37 ml.
So the volume of unknown Cd solution would be 0.37 ml
100 ppm stock solution of 1 litre [1000 ml] is given to us
0.37 ml * 100 ppm = 0.037 ppm
1 1000 ml
so unknown solution has 0.037 ppm
Imported ceramic bowls are analyzed for toxic heavy metals such as cadmium since these metals can...
Can you answer question 4 & 5? The experiment and porcedure is posted below Question 4 & 5 CHM3120C Analytical Chemistry Lab Lab 7. Spectrophotometric Determination of Iron in Mohr's Salt with o-Phenanthroline Required Reagents and Supplies: 50 mL of 0.0005M -0.0006 M of Mohr's solution (unknown), 10 g of Hydroxylamine hydrochloride (NH2OH, HCI), 500 mL of o-phenanthroline solution (contains 0.5 g of o-phenanthroline monohydrate), 83 g of sodium acetate (NaOAc. 3H20) in 500 mL of water (for 1.2 M...