500 ml of aqeous solution contains 10 g of NaOH, 20 ml of solution is diluted by 30 ml of water. Find the molarity of the resultant solution

500 ml of aqeous solution contains 10 g of NaOH, 20 ml of solution is

1.	500 ml of aqeous solution contains 10 g of NaOH, 20 ml of solution is diluted by 30 ml of water. Find the molarity of the resultant solution
Answer» olume= 500+200=700mlMass of NaOH in 0.2M SOLUTION⇒0.2= 200/100x/40 ⇒x= 10000.2×200×40 =1.6g500ml solution CONTAINS 20g∴ Total MASS of NaOH in 700ML solution= 20+1.6=21.6g∴ Molarity= 700/100021.6/40 =0.77M