Question

20 ml of 0.5 m hcl is mixed with 30ml of 0.3 m hcl what will be the molarity of the resulting solution

Answer 1

Answer:

0.38

Explanation:

Total volume of solution = 30+20 = 50 mL

Moles of HCl from the first solution: (0.5 × 20)/1000 = 0.01

Moles of HCl from the second solution: (0.3 × 30)/1000 = 0.009

Hence, total number of moles = 0.01 + 0.009

= 0.019

M = (M1V1 + M2V2)/(V1+V2)

M = (20*0.5 + 30*0.3) / (20 + 30)

M = 19/50

M = 0.38 mol/L

Thus, the molarity of the solution is 0.38M.