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Is activation energy for thermal and photochemical reactions same?
The definition of the activation energy is exactly the same -- the thermodynamic energy barrier that the reactant must pass over to convert to products. The difference between a thermal and a photochemical reaction is only where the reactants get the energy to get over this barrier. In a thermal reaction, that energy is given by the temperature, and is carried in excited rotational modes, higher kinetic energies and if hot enough, excited vibrational states. In a photochemical reaction, the activation energy is provided by photons, usually in the form of electronic excited states, but could also be vibrational or rotational. The concept of the activation barrier is identical in both cases.
How does a chain reaction start in chemistry?
In a nuclear fissionchain reaction, neutrons are absorbed by large nuclei, and they undergo fission, part of the fission products are more neutrons, which are absorbed by more nuclei, which ... blah, blah, blah.
If thermal energy must be added to a chemical reaction for the reaction to take place the reaction is a Exothermic b Reactant c Balanced d Endothermic?
If thermal energy must be added to a chemical reaction for the reaction to take place the reaction is endothermic.
What type of reaction occurs when an cooks in a pan?
This is a thermal degradation reaction.
What will get in the reaction between PVC and morpholine?
The reaction between PVC (polyvinyl chloride) and morpholine is likely to result in the formation of PVC-morpholine adducts. These adducts can improve the flexibility, thermal stability, and resistance to heat aging of PVC. The reaction is often used in the modification of PVC to enhance its properties.
Is activation energy for thermal and photochemical reactions same?
The definition of the activation energy is exactly the same -- the thermodynamic energy barrier that the reactant must pass over to convert to products. The difference between a thermal and a photochemical reaction is only where the reactants get the energy to get over this barrier. In a thermal reaction, that energy is given by the temperature, and is carried in excited rotational modes, higher kinetic energies and if hot enough, excited vibrational states. In a photochemical reaction, the activation energy is provided by photons, usually in the form of electronic excited states, but could also be vibrational or rotational. The concept of the activation barrier is identical in both cases.
What is the difference between thermal and radioactive radiation?
There is no difference
What is the difference between Thermal plastic rubber and Thermoplastic rubber?
what is the difference between the strenght of thermoplastic rubber and latex
Is there a difference between heat energy and thermal energy?
No, the same
What is the difference between thermal pollution and radioactive waste?
Biusoee
What is the difference between temperature thermal and heat?
la la la
What is difference between thermal and catalytic cracking?
Thermal CRacking is caused by heat while catalytic cracking is not caused by heat
What is the difference between thermal vents and ocean volcanoes?
the thermvents are inside a volcano
What is the difference between thermal plastic and thermoplastic?
it's just the same thing
What is the difference between photon detector and thermal detector?
The wavelength of the detected signal.
What is he difference between temperature thermal energy and heat?
Temperature is a measure of the average kinetic energy of the particles in a substance. Thermal energy is the total kinetic energy of all the particles in a substance. Heat is the transfer of thermal energy between two objects due to a temperature difference.
What is a thermal difference?
A thermal difference refers to a variation in temperature between two adjacent regions or systems. It typically indicates a contrast in the amount of heat present or being exchanged between the areas, which can affect processes such as heat transfer or energy distribution.
