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The absorbanees of solutions containing Cr as dichromate Cr,O,'- in l.0 l\fH,SO, were
Chapter 13, Problem 13-25(choose chapter or problem)
The absorbanees of solutions containing Cr as dichromate Cr,O,'- in l.0 l\fH,SO, were measured at 440 nm in a l.O-cm cell. The following results wereobtained:Find the absorptivity of dichromate (L g-l cm-I) and the molar absorptivity(L mol-I cm ') at 440 nm.
Questions & Answers
QUESTION:
The absorbanees of solutions containing Cr as dichromate Cr,O,'- in l.0 l\fH,SO, were measured at 440 nm in a l.O-cm cell. The following results wereobtained:Find the absorptivity of dichromate (L g-l cm-I) and the molar absorptivity(L mol-I cm ') at 440 nm.
ANSWER:Step 1 of 3
In order to calculate absorptivity of dichromate ( ), in ug/mL need to convert in in g/L.
By substituting the value of concentration of Cr, concentration of can be found out.
a)
b)
c)
d)
e)
f)
Table of absorbance vs can be formed as below: