Question

To 225 mL of a .80M solution of KI, a student adds enough water to make 1L of a more dilute KI solution. What is the moalrity of the new solution?

Answer 1

We have a beautiful little equation that say:
\[C _{1}V _{1}=C _{2}V _{2}=n\]
Isolate for C2 we get:
\[C _{2}=\frac{ C _{1}V _{1} }{ V_{2} }\]