Consider the following ion: BrO3−. a) Show the full electron configuration for Br. b) Draw the most correct Lewis structure for BrO3− and briefly explain why your Lewis structure is correct. c) If the structure is stabilised
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
Consider the following ion: BrO3−.
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a) Show the full electron configuration for Br.
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b) Draw the most correct Lewis structure for BrO3− and briefly explain why your Lewis
structure is correct.
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c) If the structure is stabilised by resonance, draw at least one of the possible resonance
forms. If it is not stabilised by resonance, briefly explain why.
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d) What is the electronic geometry of BrO3−? What is its molecular shape?
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e) Does BrO3− have a dipole moment? Briefly justify your answer.
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f) On average, would you expect IO3− to have longer or shorter bonds than BrO3−?
Briefly explain your answer.
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g) Which of the following molecules would you expect to have the lowest vapour
pressure? Briefly explain your choice.
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h) What is the molecular formula for Compound C? What is the empirical formula for Compound C?
please answer c, d and e
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