Question

calculate the molarity of Na0H solution containing 60g of NaOH dissolved in 500g of water ​

Answer 1

Answer:

Molarity  (M) = No. of moles of solute/Volume of solution in litres  No. of moles= mass of NaOH / molar mass of NaOH                        = 4g / 40g                       = 0.1 molecular

Volume = 250 / 1000Lit               = 0.250L

M= 0.1 mol/ 0.250L    = 0.4M

Answer 2

Answer:

3M

Explanation:

• Wb=60 gm

Mb=23+16+1=40 gm

• 1 gm=1ml
• 500gm=500ml
• M=Wb/Mb×1000/ml
• = 60*1000/40*500
• =3M