MY CART (5)
ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price:

There are no items in this cart.
Continue Shopping
                   as aboue

3 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.

3 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
Why Acetaldehyde is more soluble than Formaldehyde in water !
 
 
There is no H-bonding in both Acetaldehyde and Formaldehyde. So solubility depends on the vanderwaals forces of attractions which are proportional to molecular weight of compounds. Since MW...
  img
Ramreddy 5 months ago
 
@ramreddy sir , but then why Propanal is less soluble than Ethanal ? Also, in most of the texts we found that solublitity is inversely prop. to Hydrophobic(Alkyl) Part Conc. …
 
Navdeep Kumar 5 months ago
the number of identical bond angles in anionic part of Cl2O69(s)
 
 
Hello Bharat, The anionic part of Cl 2 O 6 that is ClO 4 − ( Perchlorate) has tetrahedral geometry. Hence, it has 4 identical bond angles. Cheers!
 
Amit Kumar 3 months ago
how do we identify the hybridisation state after watching a carbon compound
 
 
Well...I and most of the students decide it by observing the no. of pi-bonds that carbon atom has. If no pi-bond, then sp 3 ; if one, then sp 2 ; and if two, then sp. Eg. CH 2 =C=CH-CH 3...
 
Yash Jain 29 days ago
 
 
Jacob james one month ago
it is difficult to calculate internal energy U ,however ∂U can be easily determined why??explain with example
 
 
According to Einstein's equation U=mc 2 we can calculate absolute energy of a body,but in this expresssion the term c 2 reffered to the energy of any system which is quite large and...
  img
Aarti Gupta 2 months ago
 
Thanks
 
Deepak Bohra 2 months ago
At a given temperature a saturated aqueous solution of KI 127 is prepared and then solid radioactive KI 131 is added. Comment whether the solution will become radioactive or not and why.
 
 
the solution will become radioactive because I 131 is not stable isotope. So unstable nuclei is radioactive..........................................................
  img
Ramreddy 3 months ago
 
can anyone explain in terms of ionic equilibrium ???
 
Souvik Chaki 3 months ago
what is le chatelier's principle??? Explain in brief..
 
 
Le Châtelier'sprinciple states that if a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium shifts to counteract the change to reestablish an...
  img
Raheema Javed 3 months ago
 
A statement of Le Chatelier's Principle If a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium moves to counteract the change. Using Le...
  img
Sunil Kumar FP 6 months ago
View all Questions »