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The reaction below shows how the potential energy changes during a chemical reaction. How is the change in enthalpy shown on the graph?
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In a chemical reaction a catalyst changes the 1.potential energy of the products 2.potential energy of the reactants 3. heat of reaction 4.activation energy?
4. activation energy
A chemical property is a change in what?
There are many different possible property changes in a chemical change. You must post the specific reaction for anyone to tell you exactly.
What changes the rate of a chemical reaction or allows a chemical reaction to occur?
Heat?
Does a chemical reaction change physical properties or chemical?
it changes chemical properties
What is meant by thermodynamics of a chemical reaction?
It refers to the energy changes that take place during a chemical reaction.
How is Hess's law applied in calculating enthalpy?
All the reactions in a path are added together.
What does Hess's law make it possible for you to do?
Hess's law makes it possible to determine the overall enthalpy change for a chemical reaction by combining the enthalpy changes of multiple indirect reactions that add up to the desired reaction. This allows the prediction and calculation of the energy changes in chemical reactions, even if direct measurement of the reaction is not possible.
Does chemical potential changes as reaction proceeds?
yes,as gibbs free energy depends on temp. ,its value for a fixed amount of a substance change,so chemical potential changes with reaction.
Describe the two types of energy changes that occur in a chemical reaction?
An exothermic reaction and the change between potential and kinetic.
What is the Hess's law?
C - The enthalpy of reaction does not depend on the steps taken in the reaction. APEX --WXM--
What is the fomula of chemical energy?
Assuming chemical energy means the enthalpy change (measured in joules), there are several methods to calculate chemical energy, although there is no one 'formula'. The simplest way is to calculate the bond energies between the atoms in the molecules and subract the total initial energy from the total final energy. If bond energies aren't provided, more complex methods are required. If you're looking for the change in enthalpy in the reaction A --> D, and are given the changes in enthalpy for A --> B, B --> C, and C --> D, then adding the enthalpy changes for the given reactions will give you the desired enthalpy change.
In a chemical reaction a catalyst changes the 1.potential energy of the products 2.potential energy of the reactants 3. heat of reaction 4.activation energy?
4. activation energy
What comes out of a reaction?
Chemical changes occur after a chemical reaction.
What happens to the potential of the molecules in a reaction?
the potential energy of the molecules changes during a reaction.
A chemical property is a change in what?
There are many different possible property changes in a chemical change. You must post the specific reaction for anyone to tell you exactly.
What changes the rate of a chemical reaction or allows a chemical reaction to occur?
Heat?
What changes gives NO evidence that a chemical reaction has taken place?
Physical changes give no evidence that a chemical reaction has taken place, because no chemical reaction has taken place.
