Problem 87

Given information

The vapor pressure of carbon tetrachloride,    is   , and the vapor pressure of chloroform,  , is  at  . A solution is prepared from equal masses of these two compounds at this temperature.

Step-by-step explanation

Let's assume the equal masses of chloroform and carbon tetrachloride to be    .

The number of moles of chloroform is given by,

   

Where,

• is the mass of chloroform.

• is the molar mass of chloroform.

Now, the molar mass of chloroform will be,

   

   

 

Putting the values in the above-mentioned equation,

   

 

Similarly, the number of moles of carbon tetrachloride is calculated by,

Where,

•  is the mass of carbon tetrachloride.

•  is the molar mass of carbon tetrachloride.

 

The molar mass of carbon tetrachloride is

 

 

 

Putting the values in the above-equation,