How would I find the concentration of a base used in titration given the following data:
Volume of acid in Erlenmeyer flask = 25.00 mL (HCl)
Molar concentration of acid in Erlenmeyer flask = 0.2127 M (HCl)
Initial buret reading = 50 mL
Final buret reading = 29.54
Volume of base used in titration = 20.46 mL