Where are the protons and O2 formed likely to be released – in the lumen or on the outer side of the membrane?

Where are the protons and O2 formed likely to be released – in the l

1.	Where are the protons and O2 formed likely to be released – in the lumen or on the outer side of the membrane?
Answer» Where are the protons and $O_{2}$ formed likely to be released – in the lumen or on the outer side of the membrane?