Interested to Buy Any Domain ? << Click Here >> for more details...
Question 91 - In the application of Theory of Spectrometry in spectrophotometer, let n = N x C x V, V = A x t, e = a x N where n = number of molecules, N = Avogadro's number, V = volume of cuvette, A = area of cuvette, t = thickness of cuvette, C = concentration of fluid in the cuvette, e = extinction coefficient, a = effective area of molecule. (a) By using calculus in dI = -I x a x N x C x dt, prove that ln (I / Io) = -a x N x C x t, where dI is the small difference in I and dt is the small difference in t. I = intensity of light. Io = initial intensity of light. (b) Show by calculations that ln (Io / I) = e x C x t based on the answer in the previous question (a). (c) Find the equation of log (Io / I) as a function of e, C and t based on the answer in the previous question (b).
- 1 Answers
- 2560 Views
- I also Faced
- E-Mail Answers
Answer Posted / kangchuentat
Answer 91 - (a) Let dI = -I x a x N x C x dt, then dI / I = -a x N x C x dt. Integrate both sides of the equation gives ln (I / Io) = -a x N x C x t. (b) When ln (I / Io) = -a x N x C x t and e = a x N, then ln (I / Io) = -e x C x t. If ln (I / Io) = - ln (Io / I), then ln (Io / I) = e x C x t. (c) Let ln (Io / I) = log (Io / I) / log E, where E = 2.718 approximately. Then log (Io / I) = log E x ln (Io / I) = log E x e x C x t. The answer is given by Kang Chuen Tat; PO Box 6263, Dandenong, Victoria VIC 3175, Australia; SMS +61405421706; chuentat@hotmail.com; http://kangchuentat.wordpress.com.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What could be a possible cause for sudden foaming in a cooling tower?
Explain the steps required to design a vapor-liquid separator or flash drum?
What is the angle of repose and what are its applications in the chemical industry?
What is the definition of 'good' cooling tower water?
What steps can be taken to avoid stress corrosion cracking (SCC) in steel vessels used for storing anhydrous ammonia?
What is an additive?
What are demand of crotonaldehyde99% in the worldand its international market ?
What diffrence between flush distillation & batch distillation ?
What is quicklime and what are the uses?
how will we calculate the heat of formation through electron...??
dear sir/madam, I had applied for the post of officer trainee so plz if u have any papers both technical or aptitude plz inform me on sonalichavan01@gmail.com
What are some typical applications for glass-lined reactors?
What are the problems that are associated with the expansion joints?
How can arsenic be removed from aqueous waste streams?
Explain the different ways in which solids can be blended?
