Question: how to calculate how much hcl is needed to neutralize naoh?
Answer: Here is the reaction equation for the neutralization. One mole of NaOH reacts in equal 1:1 equivalents ratio with one mole of HCl. Therefore, for example, if the NaOH is 10ml of 6N solution, either 10ml of 6N HCl is needed, 30ml of 2N HCl or 60ml of 1N HCl would be needed.