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 40mL of KOH?
write the balenced chemical equation for the acid base titration.
calculate the concentration of your unknown solution.
COULD YOU PLEAASSSEEEE HELP ME BY EXPLAINING EXACTLY HOW TO DO THIS? and could you help me through the problems?

Answer 1

write a balanced reaction first

Answer 2

HNO3 + KOH - ?

Answer 3

& balance it

Answer 4

step 2
you are given concentration & volumeof KOH
thus use this formula
conc = mole / dm3
dm3 is unit of volume u need for this formula
and conc is given
thus find mole of KOH

Answer 5

now once u get the mole
& u have a balanced reaction

look at the ratio between KOH & HNO3
coefficient of KOH = known mole of KOH
coefficient of HNO3 = X mole of HNO3
so
X= (coefficient of HNO3 x known mole of KOH) / coefficient of KOH
so this way, you will find mole of HNO3

Answer 6

lastly
use same formula
conc = mole / dm3
you got mole of HNO3 & you have volume given in the question (dont forget about unit)
thus use the values and get your final ans for concentration