Question

Problem 6.86

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Problem 6.86 Identify the substance in each of the following pairs that would have the higher boiling point :	Part A NaCl or HCl H2O or H2S NH3 or PH3 N2 or NH3

Answer 1

NaCl or HCl: NaCl is an ionic compound and on the other hand HCl have less ionic character. so NaCl have higer boiling point.

H2O or H2S: H2O  have higer boiling point. as H2O have higher electronegative O atom. so take part in H bonding.

so H2O is liquid and H2S is gas.

NH3 or PH3 : NH3 have higher boiling point because N is more electronegative than P. so NH3 take part in H-bonding.

N2 or NH3: N2 is nonpolar molecule and NH3 is polar molecule due todifference in electronegativity of N and H. so NH3 have higher boiling point.