How much is the molar extinction coefficient of methylene
blue at wavelenght 664 nm? Are molar extinction coefficient
depend on concentration of solution?
Answers were Sorted based on User's Feedback
Answer / bob
At 664, it's 74028. Extinction coefficient is not dependent
on concentration, but absorption is directly dependent on
concentration and the distance (length) that the light must
travel through the solution. So you can use a very thin
layer of concentrated solution, or a test-tube full of a
less-concentrated solution to get the same absorbance.
A = e*c*d.
e = extinction coefficent
c = concentration (molarity)
d = depth (optical path length)
Is This Answer Correct ? | 20 Yes | 5 No |
Answer / alias
hi, u can gt the absorbancies from ths reely good table
here.. http://omlc.ogi.edu/spectra/mb/mb-water.html
thanks.
:)
Is This Answer Correct ? | 2 Yes | 2 No |
Answer / girish padhy
I have no idea of the value of the molar extinction
coefficient of methylene blue at wavelenght 664 nm but for
the second question, I have a dual answer.First answer
is "NO DEPANDANCE" for dilute solutions i.e.,the
concentration upto which the molecules in the solution
which do not form any di, tri or polymers.But if the
solution is made more concentrated then there is a tendency
for the molecules to form polymers.These polymers have a
tendency to absorb with wifferent absorption coefficient
then their corresponding monomers.
Is This Answer Correct ? | 4 Yes | 12 No |
who is minister of railoway
WHAT IS THE SYLLABUS OO GROUP -I?
What happens to the solubility of group II Sulphates as you go down the group?
Sr-90, a radioactive isotope, is a major product of an atomic bomb explosion. It has a half life of 28.1 year. Calculate the first order rate constant for this nuclear decay and the fraction of 90Sr that remains after 10 half lives?
what are the different by which a new molecule can be characterised ?
is the pH effects the solubility/micibility of the compound?
what is induction on electrical insulators
. Given that 2Hg2+ (aq) + 2 e- Hg22+(aq) E0 =0.92V Hg22+ (aq) + 2 e- 2Hg(l) E0 =0.85V Calculate standard free energy change and K for the following process at 25oC Hg22+(aq) Hg2+ (aq) + Hg(l)
what does 50 denote in dowex 50 ????
Find out how to make artifacts the maxwell boltzmann theory of gases . ps. I don't speak English that well
why silica absorb in mix bed resins in D M plant.
what are UV rays absorbs slightly?