i just need to know how to do one of each, if you can show steps please and than

ID: 502364 • Letter: I

Question

i just need to know how to do one of each, if you can show steps please and thank you.

Data Sheet 1 l. Preparing Standard Solutions for the Beer's Law Plot 2 M concentration of Fe(NO3, in 1.0 x 10-1M HN0, solution, mol L 1 concentration of NaSCN in 1.0 x 10-1 M HNO solution, mol L 1 flask number S6 S1 (blank) S2 volume of Na in OO, l 1.0 x 10 M HNO3 solution added, mL initial SCN ion con centration, mol L equilibrium FeNCS ion concentration, mol L ll. Spectrophotometrically Analyzing the Standard Solutions flask number S6 S2 S1 (blank) percent transmittance, 1000 2 -52 3 37 5 ZZS 22.5 absorbance laboratory instructor approval of Beer's Law plot

Explanation / Answer

The first data set is incomplete; I will need to know the volume of Fe(III) added to find out the initial concentration of SCN- in mol/L.

II. Use the relation

A = 2 – log (%T) where A = absorbance of the solution, %T = percent transmittance.

S1 (blank)

Percent transmittance (%T)

100

84.2

52.3

37.5

27.5

22.5

log (%T)

1.925

1.718

1.574

1.439

1.354

Absorbance (A = 2 – log %T)

0.075

0.282

0.426

0.561

0.646