a) An Organic compound is largely non-polar and thus quite soluble in pentane (b.p. 36 degrees C). Why would pentane be a poor choice for thermal cycling recrystallization? Suggest a different solvent in which the recrystallization would proceed better?
b) What effect on the melting point would be observed if a very high BP solvent (like methylnaphthalene) was used in a recrystallization and traces of it were left unevaporated in the purified material?
a) For a non-polar organic compound, heptane is a poor choice of recrystallization since it dissolves the compound at room temperature itself.
Instead of heptane, hexane will help ithe recrystallization to proceed well.
B) If a compound is pure, it will melt very quickly. But if it contains any traces of impurities, this will slow down the melting of compound and will range over different temperatures.
a) An Organic compound is largely non-polar and thus quite soluble in pentane (b.p. 36 degrees...
An organic compound is largely non-polar and is thus quite soluble in pentane (b.p. 36 C). Why would pentane be a poor choice for thermal cycling recrystallization? Suggest a different solvent in which the recrystallization would proceed better.