Which of the following statements correctly depicts the Beer - Lambert law?
1
Absorbance is directly proportional to path length and concentration.
2
Absorbance is directly proportional to molar absorptivity, and inversely proportional to path length and concentration.
3
Absorbance is directly proportional to molar absorptivity and path length and inversely proportional to concentration.
4
Absorbance is directly proportional to concentration and inversely proportional to path length.