Question

To make a saturated solution 36g of sodium chloride is dessolved in 100g of water at 293k find its concentration at this temperature

Answer 1

Conc.(molarity) = Mol./litre

100g = 100 ml water ...as density = M/V

and it is 1 here

so in 1000 ml 360 g of sodium will be there,

Moles of Na in 360 g = 360/23=15.65 moles

Molarity= 15.65/1000 Mol/ml

= 15.65 Mol/L or Molar

Answer 2

Solute=36g

solution=(36+100)g =136g

concentration of solution at that temperature= (36/136×100)%=(0.264×100)%=26.4%