Question

10 g of NaOH is added to 50 mL of 0.1 M aqueous solution and volume is finally made 100 ml. Calculate the molarity of resulting solution.

Answer 1

Answer:

2.25M

Explanation:

V1=V2 =50mL or 0.05L

M1= n/V1

n=(10/40)=0.25

V1=50/1000=0.05L

therefore, M1=0.25/0.05= 5 molar

M2=0.1 molar (given)

M1V1+M2V2 = M3V3

5*50+0.1*50 = M3*100

M3= 2.55M