if equal amount of NaCL and benzoic acid are taken separately and heated under similar conditions which one will melt earlier and why ?
Benzoic acid is a common preservative, while sodium chloride is one of humankind's most ancient and popular seasonings. You can separate a mixture of these two compounds by exploiting the difference in solubility. Benzoic acid is poorly soluble in cold water, while sodium chloride dissolves well in water even at cold temperatures. Many high school or college intro labs involve an experiment of this kind to teach students how to separate components of a mixture.