Hello Geof,
By all means check out the web site Mikey W has suggested but always check the details of your particular model with the owners hand book regeneration document or the dealer for accuracy.
All new and recently made cars sold in the EU have been tested by the manufacturer for their ability to tow. The manufacture will specify a maximum towed mass limit for each model, and if your caravan falls within that limit, then you can rest assured the car will tow it.
If for some reason it doesn't, then there is something wrong with the car which should be checked out.
The Mondeo has garnered a good reputation as an able tow car so do your checks but I guess it will prove to be an acceptable match.