Which statement describes the particles of an ideal gas, based on the kinetic molecular theory?
a) the motion of the gas particle is orderly circular
b)the gas particles have no attractive forces between them
c) a homogeneous mixture
d) a heterogeneous mixture

The answer is b) the gas particles have no attractive forces between them

PKa = 14 - pKb
pKa = (14 - 3.25) = 10.75

pH = pKa + log(remaining base/added acid)
--> base and acid in moles
.15 M x .02 L = .003 moles Et; .005 M x .0981 = 4.905 x 10^-4 moles HCl; .003 - 4.905 x 10^-4 = .0025095 remaining moles of Et
pH = 10.75 + (log(((.0025095 moles Et) / (4.095 x 10^-4 moles HCl))) =
pH = 10.75 + .70895 = 11.46 pH units