Sure, if the pressurant gas dissolves into the liquid propellant. But mostly chosen pressurant which is not dissolves, or used some type of separating membrane

Sure, if the pressurant gas dissolves into the liquid propellant. But mostly chosen pressurant which is not dissolves, or used some type of separating membrane (or piston), for example, in Soviet space stations used https://en.wikipedia.org/wiki/Metal_bellows https://en.wikipedia.org/wiki/Metal_bellows