Question

20ml of 0.5M Hcl is mixed with 30ml of 0.3M HCL the molarity solution is?

Answer 1

Moles of HCl from
the first solution: (0.5*20)/1000 = 0.01
the second solution: (0.3*30)/1000 = 0.009

Hence, total number of moles = 0.01 + 0.009
= 0.019
And total volume of solution = 50 mL

Hence, concentration of the hybrid or mixed solution = 0.019 moles/(50/1000) Litre
= 0.38M