Use the bond energies in the table to estimate the enthalpy of reaction for the formation of sulfur tetrafluoride monoxide. Bond Energy (kJ/mol) S-F 310 S-0 265 S=0 523 0-0 142 O=0 498 0-F 180 AHan = kJ/mol Is the formation of sulfur tetrafluoride monoxide endothermic or exothermic? O exothermic endothermic What is the electron geometry of sulfur tetrafluoride monoxide? tetrahedral trigonal bipyramidal trigonal planar octahedral What is the most likely location of the oxygen atom in the structure of OSF ? axial equatorial
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.
 alt="Use the bond energies in the table to estimate the enthalpy of reaction for the formation of sulfur tetrafluoride monoxide.
Bond
Energy (kJ/mol)
S-F
310
S-0
265
S=0
523
0-0
142
O=0
498
O-F
180
AH =
kJ/mol
Is the formation of sulfur tetrafluoride monoxide endothermic or exothermic?
O exothermic
O endothermic
What is the electron geometry of sulfur tetrafluoride monoxide?
O tetrahedral
O urigonal bipyramidal
O trigonal planar
O octahedral
What is the most likely location of the oxygen atom in the structure of OSF,?
O axial
O equatorial
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Balance the equation for the formation of sulfur tetrafluoride monoxide.
chemical reaction:
0,(g) + SF (g) → OSF,(g)
Draw the Lewis structure of OSF, where the formal charge is zero on each atom. The sulfur atom is the central atom in the
structure, and it is bonded to the oxygen atom and each of the four fluorine atoms.
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Use the bond energies in the table to estimate the enthalpy of reaction for the formation of sulfur tetrafluoride monoxide.
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