Ideal solution

<p>An ideal solution or ideal mixture is a <a href="/facts/Solution_(chemistry)/MGchhMQV">solution</a> that exhibits thermodynamic properties analogous to those of a mixture of <a href="/facts/Ideal_gas/80EfYGFj">ideal gases</a>. The <a href="/facts/Enthalpy_of_mixing/qgucNGGn">enthalpy of mixing</a> is zero as is the volume change on mixing. The <a href="/facts/Vapor_pressure/whrEr96T">vapor pressures</a> of all components obey <a href="/facts/Raoult%27s_law/35t8RbeJ">Raoult's law</a> across the entire range of concentrations, and the <a href="/facts/Activity_coefficient/ImxE0u7t">activity coefficient</a> (which measures deviation from ideality) is equal to one for each component.
</p><p>The concept of an ideal solution is fundamental to both <a href="/facts/Thermodynamics/q4hIx3yP">thermodynamics</a> and <a href="/facts/Chemical_thermodynamics/dIQMQsd0">chemical thermodynamics</a> and their applications, such as the explanation of <a href="/facts/Colligative_properties/8LEPNRpn">colligative properties</a>.
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Ideal solution open-in-new

Ideal solution