Hey,

The Cp - Cv values are same for all ideal gas and their is no largest value for ideal gases.

I hope this helps.

All the best!

Hi Tanya,

It's very easy, Cp - Cv will be same for all ideal gases.

This is because for an ideal gas according to Mayer's relation, Cp - Cv = R, where R is the universal gas constant which is equal to 8.3145 J/mol.

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!