Concept explainers
(a)
To determine:
The standard heat of formation of tetrachloroethane and standard heat of second reaction should be determined. The given equation is
Concept introduction:
At room temperature and
The term Enthalpy exchange is also used when formation of one mole of compound from its constituent elements occurs.
During any chemical reaction, when energy changes it is called as the state function according to Hess’s law. This state of function is defined as the energy changes in chemical reactions are same for any kind of reactions like one step reaction or several step reactions.
The total energy change can be calculated as summation of energy change occurring at every step.
(b)
To determine:
The standard heat of reaction for given reaction should be determined by use of Hess’s law. The given reaction is as follow:
Concept introduction:
During any chemical reaction, when energy changes it is called as the state function according to Hess’s law. This state of function is defined as the energy changes in chemical reactions are same for any kind of reactions like one step reaction or several step reactions.
The total energy change can be calculated as summation of energy change occurring at every step.
(c)
To solve:
The heat is evolved or absorbed should be found for the given process.
Concept introduction:
At room temperature and
The term Enthalpy exchange is also used when formation of one mole of compound from its constituent elements occurs.
During any chemical reaction, when energy changes it is called as the state function according to Hess’s law. This state of function is defined as the energy changes in chemical reactions are same for any kind of reactions like one step reaction or several step reactions.
The total energy change can be calculated as summation of energy change occurring at every step.
(d)
To find:
The effect of temperature change from
Concept introduction:
During any chemical reaction, when energy changes it is called as the state function according to Hess’s law. This state of function is defined as the energy changes in chemical reactions are same for any kind of reactions like one step reaction or several step reactions.
The total energy change can be calculated as summation of energy change occurring at every step.
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Chapter 9 Solutions
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