Question

compare and contrast polymorph and allotrope

compare and contrast molarity and molality

The strunger the attraction between the cation and anion in an ionic solid, the _________ the melting point, and the ______the water solubility

what are the two properties to consider when considering the ion ion interaction of solid

Answer 1

(1) Polymorphism is defined as the ability of a solid material to exist in more than one form or crystal structure, whereas allotropy is defined as the property of some chemical elements to exist in two or more different forms, in the same physical state.

(2) Molarity and molality are both used to express the concentration of a solution. The amount of solute is both expressed in moles.

Molarity (M) = moles of solute / Liter(s) of solution

Molality (m) = moles of solute / Kilogram(s) of solvent

Their major difference is for Molarity, it is expressed as the moles per Liter/s of solution while for Molality its moles per Kilogram/s of solvent.

Due to the invelment of volume term in Molarity molarity of a solution changes with temperature where as the molality of the solution will not change with temperature.

(3) The stronger the attraction between the cation and anion in an ionic solid, the stronger(more) the melting point, and are typically soluble in water .