1. Look up boron (Z = 5) in the periodic table and predict how many covalent bonds it is likely to form 2. Based on electronegativity differences, would you expect bonds between the following pairs of atoms to be largely ionic or largely covalent? Be and F 3. Assume that you are given samples of two white crystalline compounds, one of them ionic and one covalent.
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.
1. Look up boron (Z = 5) in the periodic table and predict how many covalent bonds it is likely to form
2. Based on electronegativity differences, would you expect bonds between the following pairs of atoms to be largely ionic or largely covalent? Be and F
3. Assume that you are given samples of two white crystalline compounds, one of them ionic and one covalent.
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