Q. 343.7( 6 Votes )

If 4 g of NaOH di

Answer :

There are two components in the NaOH solution, NaOH and H2O. The mole fraction of a component is given by the formula


Number of moles of H2O = Mass/Molar mass = 36/18 = 2 moles


Number of moles of NaOH = 4/40 = 0.1 moles.


Total number of moles = 2 + 0.1 = 2.1 moles.


Mole fraction of H2O = 2/2.1 = 0.952


Mole fraction of NaOH = 0.1/2.1 = 0.048


Specific gravity is the density of a substance divided by density of water. Here, the density is 1g mL-1. Mass of the solution is the sum of mass of NaOH and mass of H2O = 4 + 36 = 40g.


Volume of solution = Mass/density


Volume of solution = 40mL.


Molarity = 0.1 moles/0.04L = 2.5M.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

Determine the molNCERT - Chemistry Part-I