Question

Give the percentage and whether w/w, w/v, or v/v of the following: 10g of NaoH + 90g solvent.

Answer 1

The w/w 5 of the solution is 10 %.

Step-by-step explanation:

w/w % : The percentage mass or fraction of mass of the of solute present in total mass of the solution.

`w/w\%=\frac{\text{Mass of solute}}{\text{Mass of solution}}* 100`

w/v %: The percentage of mass of the of solute present in total volume of the solution.

`w/v\%=\frac{\text{Mass of solute}}{\text{Volume of solution}}* 100`

v/v % : The percentage volume of the of solute present in total volumeof the solution.

`v/v\%=\frac{\text{Volume of solute}}{\text{Volume of solution}}* 100`

Mass of solution = Mass of solute + Mass of solvent

Mass of solute= 10 g of NaOH

Mass of solvent = 90 g

Mass of solution = 10 g + 90 g = 100 g

`w/w\%=(10 g)/(100 g)* 100 =10\%`

The w/w 5 of the solution is 10 %.