Question

A. Preparation of the Calibration Curve 2A10 Concentration of NASCN in 0.10 M HNO, solution 2x 10 Concentration of Fe(NO,), in 0.10 M HNO, solution Flask Number 2 3 4 5 6 Volume of NaSCN, mL Solution H10 5 Initial [SCN ], M Equil. [FENCS2 ], M Percent T 200 377 Absorbance

how do I find the percent t for all?

Answer 1

The formula to convert absorbance to % T is : %T = 10^{(2 - A)}

For trial 1,

absorbance, A = 0

%T = 10^{(2 - 0)}

%T = 10²

%T = 100 %

For trial 2,

absorbance, A = 0.105

%T = 10^{(2 - 0.105)}

%T = 10^1.895

%T = 78.52 %

Trial	1	2	3	4	5	6
Absorbance	0	0.105	0.200	0.304	0.377	0.454
%T	100 %	78.52 %	63.10 %	49.66 %	41.98 %	35.16 %