Question

1. solids, liquids, and solutions, and intermolecular forces. 1. For each pair of substances, identify which has the highest melting point. For each, briefly explain your reasoning Ne: e. Surface area also matters. More surface area, more contact, stronger cohesion. Your book mentions this. Based on that, which do you think is most likely to be a solid at room temperature?

Answer 1

1. solids, liquids, and solutions, and intermolecular forces. 1. For each pair of substances, identify which has the highest melting point. For each, briefly explain your reasoning. o highest + it highest o=0 Be highest A highest e. Surface area also matters. More surface area, more contact, stronger cohesion. Your book mentions this. Based on that, which do you think is most likely to be a solid at room temperature? likely to be solid For a,b,c and d the higher the molar mass higher is the melting point. In case of b, all have almost same molar mass, but H2O has stronger and more number of H bonds than NH3 and CH4 does not have any H bonds. e) more branching, less surface area , less cohesion, so lower boiling and melting points. no branches, higher surface area , higher boiling and melting points.