Question

If x molal solution of a compound in benzene has mole fraction of solute equal to 0.4 then the value of x is

Answer 1

x=8.6 molal solution

Answer 2

Answer:

Explanation:

Basis -  1000 g of benzene      

Mole fraction =moles of x/moles x+ moles of y          

no.of moles of benzene =1000g/78=13moles      

   y= benzene

(X)Mole fraction =No.of moles of x   /No.of moles of benzene +no.of moles of x

0.4=x/x+13

0.4(x+13)=x  

0.4x+5.2=x  

5.2=0.6x

5.2/0.6=x  

x=8.666666666666666666  

x=8.6moles                

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