Which pure compound would have the higher boiling point? Explain you answer full

Question

Which pure compound would have the higher boiling point? Explain you answer fully comparing the types of IMF that these compounds could possibly generate. b) CH_4 or H_2O c) CH_3CH_2CH_2CH_2CH_3 or CH_3C(CH_3)_2CH_3 Draw an IMF diagram depicting the strongest force of attraction in a sample of the following compounds: a) ethanol (CH_3CH_2OH) b) PCl_3 a) Draw the 2-step solution cycle diagram for calcium chloride. The process is exothermic. b) would the heat of hydration value be bigger for the Ca^2+ ion or for the Cl^- ion? Explain your answer.

Explanation / Answer

1)

a )

CH3OH has higher boilig point . it is due to inter molecular hydrogen bonding .   (CH3)3COH is buliker molecule it cannot form intermolecular hydrogen bond .

b)

H2O is higher boiling point . it is due to hydrogen bond present in it . where as in CH4 weak dispersion forces are present

c)

CH3CH2CH2CH2CH3 has higher boiling point. it is due to straight chain . both molecules having dispersion forces but straight chain molecule can occupy larger surface area than branched molecule. so it has higher boiling point

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