Neutralization - Chemistry Help :(

Question

If 250mL of 5.0 M HCl needs to be neutralized, what volume of 10 M NaOH must be used?

I think it is 200mL or 250mL but I am not sure.

50 mL of 0.1 M HNO₃ is mixed with 32 mL of KOH. What is the concentration of the KOH?

Answer 1

Since this involves a monoprotic acid & a monobasic base, we can simply use the equation (MV)_acid = (MV)_base So, in rearranging this to solve for the Volume of Base, we have: V_base = (MV)_acid/M_base which, when solved, gives you 125 mL of base, NaOH

In the second problem, we again have a monoprotic acid/monobasic base, so we can use the same equation, but this time solving for the M_base. When putting in the given values you should get 0.156 M KOH