Problem S$1.100k\frac{g}{h}$ of a mixture containing acetic acid$-$chloroform with composition $30\%\frac{w}{w}$ of acetic acid are being treated at $18C,$ in co$-$current, with $120k\frac{g}{h}$ of water in the aim to extract the acetic acid. Calculate:

a$)$ Amount and composition of the extract and raffinate

b$)$ Amount and composition of the extracted and raffinated products

c$)$ Percentage of acetic acid extracted

d$)$ Maximum concentration that can be attained of acetic acid in the extracted product