You can't expect more than a 20- to 25-degree differential with a standard home central AC unit. Older, less-efficient units will struggle to reduce indoor temps even the 20 degrees below outdoor temps.
The outdoor portion of the central ac unit is what gives up the heat from indoors, so it has to be outside. For a more thorough explanation see the question: How does air conditioning work.
A split air conditioner is a unit where the condensing unit is outside and the evaporator is inside.
It changes based on vehicle, outside temp, and desired inside temp. Pressuse depends on ambient temperature, the higher the temp, the greater the pressure
An air conditioner uses refrigerant to transfer heat from one place to another, such as from inside the home to the outside.
Whatever temperature you are comfortable, 78 F is recommended by utilities in summer.
air conditioner
If the house temperature inside is greater than the temperature outside the house, then yes. If the temperature outside the home is greater than the temperature inside of the home, then no.
If your air conditioner is running outside by not blowing cold air inside through your vent, your indoor coil is frozen. You will need to turn everything off and allow the unit to thaw out.
Inside or outside?
yes
dead mouse inside the furnace
When air is cooled the water in it comes out (like mist forming on the outside of a class filled with cold coke) and this happens in the air conditioner. Normally the dripping water is drained way to the outside (or a drain) by a pipe. If the pipe gets blocked the water will overflow and the conditioner will leak water - get it serviced.