Question

a 5% solution of sucrose (molar mass 342)is isotonic with 0.877% urea solution.What is the molar mass of mean?

Answer 1

Let the osmotic pressure of cane sugar solution is Π1 and osmotic pressure of urea is Π2.

according to the question Π1 =  Π2

Π1 = W1 RT/M1V  and  Π2 = W2 RT/M2V 

W1 = wt. of cane sugar in 100 ml solution, M1 =mol. wt. of cane sugar, W2 = wt. of urea in 100 ml. solution M2= mol. wt. of urea.By the value given in question,

W1 = 5 , W2 =0. 877  V=100ml, M1 is given =342  M2 =?

Π1 =  Π2 , W1 RT/M1V  =  W2 RT/M2V  putting the value of W1 , W2 and M1 we can get the value of M2 = W2/W1 *M1

 = 0.877 * 342gram /5= 60gram

Answer 2

Explanation:

so this is the solution of the numerical