n aqueous solution of butandioic acid was shaken with ether at 298K until equilibrium is achieved. 25mL of the aqueous layer requires 30mL of 0.05M NaOH for neutralisation while 50mL of the ether layer requires 20mL 0f 0.025M NaOH for neutralization. Calculate the partition coefficient of butandioic acid between ether and water at 298K.