You have an unknown solution of HNO3 and a solution of 0.50 M KOH.
You placed 20 mL of HNO3 into the flask and used 40 mL of KOH from the buret to complete the titration.calculate the concentration of your unknown solution

Question

You have an unknown solution of HNO3 and a solution of 0.50 M KOH. 
You placed 20 mL of HNO3 into the flask and used 40 mL of KOH from the buret to complete the titration.calculate the concentration of your unknown solution

anonymous · Answer

Wasn't this the same question I helped you with yesterday?  You should generally start by writing the balanced equation for the chemical reaction taking place in the acid-base neutralization. (We did this.)  
Then, find the number of moles of KOH, and follow the rest of the steps I explained yesterday.

anonymous · Answer

HNO3   :    KOH
 1          :      1
C1V1  =  C2 V2
C1 X 20 = 0.5 X 40
C1 = 0.5 X 40 / 20 = 1 M is HNO3