how many milliliters of 2.00M HCL must be added to neutralize the following:
A mixture of 0.160 M HNO3 (100.0 mL) and 0.100 M KOH (400.0 mL)?

Question

how many milliliters of 2.00M HCL must be added to neutralize the following:
A mixture of 0.160 M HNO3 (100.0 mL) and 0.100 M KOH (400.0 mL)?

matt101 · Answer

You need to figure out how many moles of acid and base you have.

HCl and HNO3 are both acids because they produce H+ when dissolved in water. KOH is a base because it produces OH- when dissolved in water. The question says you have a mixture of HNO3 and KOH to start, meaning those two guys will undergo a neutralization reaction themselves before you even add any HCl.

This means the first thing to do is find out how much KOH is left AFTER the neutralization with HNO3 is complete. Once you have that number, you can easily find out how much additional HCl you need to add to fully neutralize the KOH.