hello, i totally dunno how to do this qn..
N-butylamine, CH3(CH2)3NH2 is a weak mono-acidic organic base. A
chemist starts with a 25cm^3 solution containing 2.00 x 10^-3 mol
N-butylamine and he wishes to make a buffer solution of pH 10.00
using N-butylamine and its salt, CH3(CH2)3NH3+Cl-
a) Given that the pKa value of N-butylammonium ion, CH3(CH2)NH3+,
is 10.61 at 25ºC, calculate the pH of N-butylamine solution. (ans:
11.76)
b) An equal volume of aqueous N-butylamine salt is added to the
N-butylammine solution to produce a buffer solution of pH 10.00.
Calculate tej concentration of the N-butylammine salt in the buffer
solution. (ans: 0.163moldm^-3)
thanks a lot :)