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.
![For
each of the following molecules in the list:
1) List the total number of valence electrons and then draw the Lewis dot
structure.
2) Use the kits to make a model of each molecule or ion. (A specific ball may not
exist for the type of atom that you are looking for. If this happens, use a ball
for which the number of holes matches the number of electron areas needed.)
3) Name the electron pair geometry.
4) Name the molecular shape.
5) Draw a 3-D sketch of the molecular shape and list the bond angles.
6) If the molecule contains covalent bonds, indicate if it is polar or nonpolar.
7) When necessary, draw a polar arrow for each bond.
8) If the molecule is polar, draw an arrow next to the 3-D sketch indicating the
direction of the dipole moment.
Molecular Lewis Dot AXE Type Electron
on Central Pair
Atom
Molecular Ionic,
polar, or
nonpolar
3-D Sketch
Formula
Structure
Shape
with bond
Geometry
angles and
dipole
arrow](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9203a303-d0a7-4a72-8bbd-2a7378a7da0a%2Fa661db35-bc71-4462-94f2-73e332681435%2F713pxrq_processed.jpeg&w=3840&q=75)
![16. PBrs
17. IF.
18. BrF3](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9203a303-d0a7-4a72-8bbd-2a7378a7da0a%2Fa661db35-bc71-4462-94f2-73e332681435%2Fjir6cu_processed.jpeg&w=3840&q=75)
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