The yield of a chemical reaction is defined as the ratio (expressed as a percentage) of usable output to the amount of raw material input. Suppose the yield of a chemical reaction depends on the length of time the process is run and the temperature at which the process is run. The yield can be expressed as follows: Yield 5 90.79 2 1.095x1 2 1.045x2 2 2.7812 1 2 2.524x2 2 2 0.775x1x2Here x1 5 (Temperature 2 125)y10 and x2 5 (Time 2 300)y30, where temperature is measured in degrees Fahrenheit, and time is measured in seconds. Use a data table to find the temperature and time settings that maximize the yield of this process.
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.
The yield of a
(expressed as a percentage) of usable output to the
amount of raw material input. Suppose the yield of a
chemical reaction depends on the length of time the
process is run and the temperature at which the process
is run. The yield can be expressed as follows:
Yield 5 90.79 2 1.095x1 2 1.045x2 2 2.7812
1
2 2.524x2
2 2 0.775x1x2Here x1 5 (Temperature 2 125)y10 and x2 5 (Time 2
300)y30, where temperature is measured in degrees
Fahrenheit, and time is measured in seconds. Use a
data table to find the temperature and time settings
that maximize the yield of this process.
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