Partial molar volumes in NaCl solutions refer to the concept that the total volume of a mixture is not simply the sum of the individual volumes of its components. Instead, it can be expressed by the equation V = n1V1 + n2V2, where V is the total volume, n1 and n2 are the moles of each component, and V1 and V2 are the partial molar volumes. This principle highlights how interactions between different substances can affect the overall volume, which is particularly relevant in solutions. The discussion also notes that while the concept was demonstrated through a lab mixing alcohols and water, the underlying principle remains applicable to salt solutions like NaCl.
