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sarahforman_Dis2I wrote:Can someone please explain what makes a reaction reversible. I am just a little confused about qualifies as a reversible reaction.
A reaction is reversible when it is in equilibrium with its surroundings. This occurs when the work is isothermal (at a constant temperature) and the expansion is reversible. I believe the question asked will point out whether it is reversible or not, (look at 4A.5).
In addition, when solving problems involving a reversible reaction, you'll want to make sure to use the work = nRT*ln(v2/v1) equation since you'll actually need to use the integral when the pressure is constantly changing.
Something to note is that the work a system can do is greatest in a reversible process, compared to an irreversible process. This is because a reversible process is one that can be reversed by an infinitely small change in a variable, i.e. pressure such that when a gas expands reversibly, the external pressure is matched to the pressure of the gas at every stage of the expansion. Hence we get the graphs:
Most of the questions I’ve come across have stated that the process was reversible or nonreversible. Reversible reactions must be at constant temp as well and that’s why we use the equations for w that includes T not delta T.
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