Weigh accurately between 9,8 and 10g of ferrous ammonium sulphate into a 250cm volumetric flask and dissolve it in a little deionised water. Add about 50cm' of 2M H,80 (Sulphuric acid) and
make it up to the mark. Pipette 25cm' portion of this solution into a conical flask. Titrate this with
the given potassium permanaganate solution. No indicator is required. The appearance of a
permanent pink colour of Mno, in the solution is the end point.
CALCULATIONS:
Determine the Concentration of the potassium permanganate in (a) molarity (b) g/dm'.​

14 days is the half-life of phosphorus-32

answer : (a) volume of the gas = 8.67 ×   l

                (b) second virial coefficient b = -1.21226 l/mole

solution :   given,     t = 300k

                                p = 20atm

                                z = 0.86

                                n = 8.2 mmoles = 8.2 × moles

                                r =   0.082 l atm/k/mol

        find,     (a) volume of gas   and (b) second virial coefficient b at 300k.

formula used :            

                          and            

(a)            

                    = \times 0.082\times 300}{20}[/tex]

                    = 8.67 ×   l

(b)      

                    = (0.00867-1) × 8.659

                    = - 8.5839 l/mole

level 4 to level 2 : ))