What is the concentration of an HCl solution if 23.1 mL of HCl are needed to neutralize completely 35.0 mL of 0.101 M Ba(OH)2

I cannot get the right answer

3 answers

If you had shown your work I could have found the error.
(Macic)(23.1mL)=(0.101M)(35.0mL)
Macid = .153
See your post above.