# Determine whether each of these processes is reversible or irreversible.

Determine whether each of these processes is reversible or irreversible. Drag the appropriate items to their respective bins. Bins: Reversible and Irreversible 1) solid melting infinitesimally slowly at its melting point 2) a single swing of a real pendulum 3) gas condensing infinitesimally slowly at its condensation point 4) solid melting infinitesimally slowly above its melting point 5) liquid freezing below its freezing point 6) liquid freezing infinitesimally slowly at its freezing point 7) a single swing of a frictionless pendulum 8) liquid vaporizing infinitesimally slowly at its boiling point 9) gas condensing below its condensation point 10) liquid vaporizing above its boiling point

## General guidance

Concepts and reason
The concept used is to separate reversible and irreversible processes.

Fundamentals

Reversible process is the process when the system can return back to the initial state at the end of the process. The system is in thermodynamic equilibrium throughout the process. Irreversible process is the process when the system cannot return back to the initial state at the end of the process. The system is not in thermodynamic equilibrium throughout the process.

## Step-by-step

### Step 1 of 2

Solid melting infinitesimally slowly at its melting point is a reversible process. Gas condensing infinitesimally slowly at its condensation point is a reversible process. Liquid freezing infinitesimally slowly at its freezing point is a reversible process. A single swing of a frictionless pendulum is a reversible process. Liquid vaporizing infinitesimally slowly at its boiling point is a reversible process.

These are all reversible process because they can return back to the original states at the end of the process.

### Step 2 of 2

A single swing of a real pendulum is an irreversible process. Solid melting infinitesimally slowly above its melting point is an irreversible process. Liquid freezing below its freezing point is an irreversible process. Gas condensing below its condensation point is an irreversible process. Liquid vaporizing above its boiling point is an irreversible process.

The reversible and irreversible processes are as follows:

These are irreversible processes because they cannot return back to their original states.