Question

40g naoh is dissolved in water to form 1l naoh solution find out the molarity

Answer 1

the volume of naoh= 1litre
the mass of nai= 40 grams
therefore, the mole number of naoh= 40÷23=1.7839
therefore, the molarity of naoh solution is = 1.7839

Answer 2

Given mass is 40g and molar mass of NaOH is 23+16+1=40
No of moles=given mass/molar mass
No of moles=40/40=1
Molarity=no of moles/1l of solution
So molarity is 1M