Phenols. Various compounds of phenols are common in plant tissues, each of which may enclose a number of grams per every kilogram. Phenol compounds present in plant tissues begin to blend as a result of stimulants on the outer surface like ultraviolet radiation, microbial infections or and chemical changes.
The POSB branch codes are: 1  If there are 10 digits in your account number, the branch code is the first 3 digits of your account number. 2  If there are 9 digits in your account number, the branch code is â081â. If there are 10 digits in your account number, the branch code is the first 3 digits of your account number. 2  If there are 9 digits in your account number, the branch code is â081â.
Find pOH first. pOH = 14 - pH pOH = 14 - 9.75 pOH = 4.25 Find [OH-]. [OH-] = 10^-pOH [OH-] = 10^-4.25 [OH-] = 5.62 x 10^-5 M Letting x = [OH-], let's now solve for Kb. Kb = x^2 / (molarity - x) Kb = (5.62 x 10^-5)^2 / (1.01 x 10^-3 - 5.62 x 10^-5) Kb = 3.31 x 10^-6 (Answer to a) Solving for pKb: pKb = -log(Kb) pKb = -log(3.31 x 10^-6) pKb = 5.480 (Answer to b) Hope this helps!