Electro Analytical Techniques

For the old formulae… Go in XII -> Chemistry -> Electrochemistry

Buffer solution

$pH = pK_a + log{\text"Conjugate base"}/{Acid}$

$pH = p K_a + log{[salt]}/{[\text"weak acid"]}$

Lambert’s Law

-${dI}/{I_o}$ α dx

$I_o$ = Intensity (radiant power) of the incident radiation
dx = Small thickness of solution or path length
dI = Small decrease in intensity of light = $I_o – I_t$

Beer’s Law

-${dI}/{I_o}$ α dC

Lambert-Beer Law

Absorbance, $A = log {I_o}/{I_t} = k.x.C$

${I_o}/{I_t}$ = transmittance

A = ∈ . x . C

∈ = molar absorptibity/ molar extinction coefficient