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What is difference between thermal and photochemical reaction?
Photochemical reaction: a chemical reaction induced by electromagnetic radiations: ul- traviolet, visible, etc.) Thermal reaction: a chemical reaction induced by increasing the temperature (ex.: thermal dissociation, etc.)
What do you mean by photochemical reaction?
A primary photochemical reaction is the immediate consequence of the absorption of light. Subsequent chemical changes are called secondary processes. http://edelsteincenter.files.wordpress.com/2010/07/photochemistry.pdf
When a picture fades after being in the sunlight is this a physical change?
This is a chemical change, a photochemical reaction.
Is rusting of iron is photochemical process?
No, rusting of iron is not a photochemical process. Rusting is a chemical reaction that occurs in the presence of moisture and oxygen, leading to the formation of iron oxide. Photochemical processes involve light as a driving force for chemical reactions.
What change in color is observed when silver chloride is left exposed to sunlight. What type of chemical reaction is this?
This is a photochemical reaction of decomposition: silver (black) is released.
Why do you need freshly prepared starch solution for iodometric titration?
because,starch undergoes a photochemical reaction. So, with the passage of time it can under go to the photochemical reaction and starch wouldnot be starch but it might have changed in anyother product. so...we should use freshly prepared starch.
What is difference between thermal and photochemical reaction?
Photochemical reaction: a chemical reaction induced by electromagnetic radiations: ul- traviolet, visible, etc.) Thermal reaction: a chemical reaction induced by increasing the temperature (ex.: thermal dissociation, etc.)
Wtite the reaction which is used in black and white photography?
Photolytic Reaction
What do you mean by photochemical reaction?
A primary photochemical reaction is the immediate consequence of the absorption of light. Subsequent chemical changes are called secondary processes. http://edelsteincenter.files.wordpress.com/2010/07/photochemistry.pdf
What form of energy drives a photochemical reaction?
The energy in light
Where do photochemical reaction happen in plants?
it happens in the thylakoids of a chloroplast.
What critical step in photosynthesis do photochemical reaction occur?
The splitting of water
What does the word photochemical mean?
Photochemical refers to a chemical reaction that is triggered or influenced by light. It involves the absorption of light energy to initiate a reaction. Photochemical processes are widely used in areas such as photography, environmental science, and organic chemistry.
What is the statement of Stark-Einstein's law of photochemical equivalence?
Stark-Einstein's law of photochemical equivalence states that each photon absorbed or emitted in a photochemical reaction is associated with the activation of one molecule. This law helps to explain the relationship between light energy and the number of molecules undergoing photochemical reactions.
Why photochemical reaction is zero order reaction?
Photochemical reactions often involve the absorption of photons to initiate the reaction, rather than the concentration of reactants. This means that the rate of the reaction is not dependent on the concentration of reactants, leading to a zero order relationship between reactant concentration and reaction rate.
What is the meaning of photochemical smog?
Photochemical Smog is any chemical reaction that takes place with the presence of sunlight. The most common example is Ground-level Ozone, caused by reactions of common pollutants along with their reaction to the sunlight.
When a picture fades after being in the sunlight is this a physical change?
This is a chemical change, a photochemical reaction.
