1.

The solutions which are isotonic with 6 % (w/V) solution of urea are

Answer»

18 % (w/V) solution of glucose
0.5 M solutions of `BaCl_(2)`
1 M solution of socrose
1 M solution of acetic acid.

Solution :`(a,C) ` OSMOTIC pressure, `pi = CRT`
`C_(("urea"))= 6 g// 100 ML RARR 60g//L, pi_(("urea")) = (60)/(60)RT = RT`
(a) `C_(("glucose")) = 18 g// 100 mL rArr 180 g//L`
`pi _(("glucose")) = (180)/(180) RT = RT`
(b) `pi_(BaCl_2) = 3 XX 0.5 RT = 1.5 RT (i=3)`
`pi_("surose") = 1RT=RT`
(d) `pi_("acetic acid") = 2 xx1 xx RT =2 RT =2 RT (i =2)`


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