Question

0.004 M Na2SO4
solution is isotonic with 0.01 M glucose solution, at a particular temperature. The
Van’t Hoff factor, i of Na2SO4
is
1) 3
2) 1.5
3) 2
4) 2.5

can anyone help me this is urgent

Answer 1

Answer:

Correct option is

Cπ

Na

2

SO

4

=π

Glucose

=0.01×RT

and 0.01RT=i×0.04RT

Na

2

SO

4

−−−−−>2Na

+

+SO

4

2

−

1−α 2α α

i=1+2α=2.5

α=0.75

or 75% dissociation