Question

find the molality of solution if 10 gram of CH4 is dissolved in hundred gram of benzene​

Answer 1

Answer:

I think so,

As we know that

p = k x c

We have given p = 760 mm, k = 4.27x 105

Putting the given values in equation

760 = 4.27x 105 x c

Or

c = 760 / 4.27x 105

c = 178 x 10-5

Answer 2

Answer:

6.25 molal

Explanation:

Molality=moles of solute/mass of solvent(int kg);

10gm CH4, moles of CH4 would be=10/16=0.625

here,benzene is given as solvent=100gm

in kg mass of benzene=100/1000=0.1kg

on substituting these in formula (mentioned above):

molality=0.625/0.1=6.25 molal