Which liquid would you expect to have a higher boiling point, Bromine (Br2) or Iodine I2)? Explain your answer.
Correct answer: Iodine . The asymetirc distribution of electrons leading to an instantaneous dipole would be greater for Iodine than Bormine as it has a higher number of electrons surrounding it's nucleus. This would lead to an increased strength of van der Waals' interaction between opositely charged dipoles and would therefore require more energy and hence higher temperature to overcome, leading to a higher boiling point.
JW
Related Chemistry A Level answers
All answers ▸pH and Kw question: A student dissolves 1.75g of a drain cleaner (based on NaOH) in water and makes the solution up to 100cm3. The student measures the solution pH as 13.60. Determine the percentage of NaOH in the drain cleaner, in terms of mass (g).
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A chemist mixes together 0.450 mol N2 with 0.450 mol H2 in a sealed container. The mixture is heated and allowed to reach equilibrium. At equilibrium, the mixture contains 0.400 mol N2 and the total pressure is 500 kPa. Calculate Kp.
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