The correct option is VI /n1 = V2 / n2.
The ideal gas law is a combination of three different gas laws. Boyles' , Charles' and Avogadro's gas laws are combined together to form the ideal gas law. This means that these three gas laws are related. From the options given above, VI /n1 = V2 / n2 is correct because it is the equation for the Avogadro's law.
