Question

Calculate the Percentage of NaCl by mass in 2 M NaCl solution that has density 1.01 g/ml.

Answer 1

We have 2M NaCl
this implies 2moles of NaCl is present in 1L of Solution....
1mole of NaCl weights 58.5 g
therefore 2moles weights 117g
here we get 117g as total mass of NaCL in solution...


Now,
Density of Solution is 1g per ml
therefore 1000 g per 1L...

here we got weight of NaCl and Solution... by these we can find mass percentage of NaCl...
it is. 117/1000×100
11.7%....

Answer 2

◆Ekansh Nimbalkar◆
hello friend here is your required answer