[KevinM]

Hey, In my chemistry class, we've begun titration, and we're currently doing a lab on it. We had to find the molarity of an unknown solution and find the molarity of HCl and also to standardize the amount of NaOH needed to make the solution turn pink.
I have 14mL of unknown solution "M" and it took 107.2 mL of NaOH to make the solution turn pink. Ive standardized it to get 0.125 M NaOH but I'm really confused on how to do the molarity of HCl calculations. Can anyone help? Any help would be appreciated.

[macman104]

Ok, so it was a solution of unknown concentration of HCl.

Can you write a balanced equation for the neutralization of HCl with NaOH?

You have the volume of NaOH used, and the molarity, you can calculate the moles of NaOH.

From this, you can find the moles of HCl reacted, and since you know the volume, you can find the molarity.