Critical molar volume
=====================

Critical molar volume of a van der Waals fluid is proportional to the excluded volume
parameter :math:`b` of the van der Waals equation. See :ref:`vdw_critical_parameters_def`.

**Links:**

#. `Wikipedia <https://en.wikipedia.org/wiki/Van_der_Waals_equation#Critical_point_and_corresponding_states>`__.

.. py:currentmodule:: symplyphysics.laws.thermodynamics.equations_of_state.van_der_waals.critical_molar_volume

.. py:data:: critical_molar_volume

    Critical :attr:`~symplyphysics.symbols.basic.molar_volume` of the van der Waals fluid.

Symbol:
    :code:`v_cm`

Latex:
    :math:`v_{\text{c},\text{m}}`

Dimension:
    :code:`volume/amount_of_substance`


.. py:data:: excluded_volume_parameter

    :attr:`~symplyphysics.symbols.thermodynamics.excluded_volume_parameter`.

Symbol:
    :code:`b`

Latex:
    :math:`b`

Dimension:
    :code:`volume/amount_of_substance`


.. py:data:: law

    :code:`v_cm = 3 * b`


    Latex:
        .. math::
            v_{\text{c},\text{m}} = 3 b