This is not an answerable question. The correct amount of freon is set during the initial set up by the installer and is dependent on the length and routing of the lines.
It should be listed on the tag on the outdoor unit (in ounces). If not I would say between 8-12 lbs as a guesstimate.
20 pounds
A "1 Ton" air conditioner is equal to a "12,000 BTU" rated air conditioner.
3 3/4 pounds
The amount of freon in an air conditioning system is more dependant on the size of the components and the type of equipment than the cooling capacity. A typical system has a tag located near the charge ports that will tell you not only how much refrigerant is in the system, but what type as well.
2lbs. Should be on label top of accumulator
$60.00
2200 watts
Around 5.2kW
$2800-$3500
On average 12 to 16 lbs