Ultra-Visible Spectroscopy

Question 1

What is the relationship between the absorbance of a solution and its concentration?

Answer 1

According the Beers the law the more concentrated a solution is the light is absored.

A=eBC

A is the absorbsion

B= is the optical path

e=absorptivity of the species

C= is the concentration

Question 2

On a calibration curve, what is labeled on the x-axis and is labed on the y-axis?

Answer 2

The X axis is labed “concentration”

The Y axis labed
“absorbance”

Question 3

What should you do if a solution falls outside the range of standard for a calibration curve?

Answer 3

If a sample doesnt fall within the standards of the calibration curve, you must dilute the sample again.

Question 4

Zero Order Reaction Kinetics

Answer 4

Y= Concentration
X=Time
Slope = -k

Question 5

Frist Order Reaction Kinetics

Answer 5

Y=ln(concentration)
X=Time
slope =-k

Question 6

Second order reaction kientics

Answer 6

Y=1/concentration
X=time
Slope = k