as aboue

2 years ago

Share

Answers : (1)

                                        

1. Photochemical reactions do not take place in dark but take place in the presence of light by absorbing it.


2. Since different colored radiations in the range of visible light have different frequencies and hence different energies, therefore all radiations may not be able to initiate a particular reaction. For example, a photon of violet light has highest frequency and hence the highest energy. Hence a reaction which is initiated by violet light may not be initiated by other colored radiations 0of visible light. On the other hand, a photon of red light has lowest frequency and energy. Therefore a reaction that can be initiated by all other radiations as well.


3. Temperature has very little effect on the rate of a photochemical reaction. Instead, the intensity of light has marked effect on the rate of photochemical reaction.


4. The free energy change of a photochemical reaction may not be negative.


5. There are many substances which do not react directly when exposed to light. However, if another substance is added, the photochemical reaction starts.


example:- photosynthesis,etc.

2 years ago

Post Your Answer

More Questions On Organic Chemistry

Ask Experts

Have any Question? Ask Experts
Post Question
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!!
Click Here for details
what are reducing centres in mono saccharides? please help
 
 
Monosaccharides are the simplest class of carbohydrates.They cannot be further hydrolyze to give smaller units.Thier general formula is (CH 2 O)n,where n is 3 to 7.Glucose,fructose are the...
  img
Aarti Gupta one month ago
 
Monosaccharides are the simplest class of carbohydrates.They cannot be further hydrolyze to give smaller units.Thier general formula is (CH2O)n,where n is 3 to 7.Glucose,fructose are the...
  img
Aarti Gupta one month ago
which is more acidic water or methanol?
 
 
Water is more acidic than methanol because methanol is a basic and water can be considered as neutral. So, in the ph scale water is more reactive than methanol. methanol is the simplest form...
 
Yugabrat Gogoi 4 months ago
 
Methanol is more acidic than water pK a of methanol = 15.54 pK a of water = 15.74 you know lesser pKa means more acidic , methanol is more acidic than water ;
 
MANU MITRAAN 4 months ago
In cannizaro reaction, after the heterolytic cleavage of the pi bond due to the attack of the OH - ion at the carbonyl carbon, the pi bond is reformed and a H- ion leaves. Why is it more...
 
 
http://www.askiitians.com/revision-notes/chemistry/aldehydeketone-and-carboxylic-acid/ . Please go through this...
  img
Harishwar 3 months ago
 
I found out the answer. The OH- attacks the electrophillic carbonyl carbon and the pi bond of the carbonyl oxygen is broken and the electron moves to the oxygen. Since the medium is basic in...
 
Amogh 3 months ago
bile juice responcible for emulsification of fats is stored in
 
 
Bile or gall is a bitter-tasting, dark green to yellowish brown fluid, produced by the liver of most vertebrates, that aids the digestion of lipids in the small intestine. In humans, bile is...
  img
Sunil Kumar FP 2 months ago
 
Hello Student Bile juice is one of the number of ther digesive juices prent in human digestive system. Bile juice is responcible for emulsification of the fats of the foold. Bille juice is...
  img
Gaurav 2 months ago
Coordination no. Shown by cyclobutadiene???? Pls answr......
 
 
The salt [K([18]crown-6){Cp*Fe(η4-C4py4)}] (K1, py = 2-pyridyl, Cp* = C5Me5) is accessible by the reaction of an iron(0) naphthalene precursor and bis(2-pyridyl)acetylene. Cyclic...
  img
Suraj Prasad 4 months ago
What is the hybridisation of Phosphorus in PH3?
 
 
for phospine it is sp3 because the hybrid was just resulted from sigma bond of the 3s orbital of the H and p orbital of the P,however, only 3 bonds will form because the remaining two...
  img
Sunil Kumar FP 5 months ago
 
sir,will the drago rule not be applied here?
 
vineet chatterjee 5 months ago
View all Questions »