Question

Problem 96

Answer 1

Given information

 pentane by mass is present , and Pure pentane and hexane have vapor pressures of and , respectively.

Step-by-step explanation

Step 1.

 pentane by mass is present, that means of pentane is present in of solution .

Hence, the mass of pentane = 

           mass of hexane  

                                 

Also , molar mass of pentane  

So moles of pentane = mass of pentane present ÷ molar mass of pentane 

                             

                             

Similarly, moles of hexane