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Amit Rai

teacher | Maths Physics Chemistry

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SOLUTION OF TRIANGLE-Projection Formula

 

MATHS CONCEPTS OF COORDINATE GEOMETRY : STRAIGHT LINE

CONCEPTS OF COORDINATE GEOMETRY :

                            

                                                                   STRAIGHT LINE



THIRD LAW OF THERMODYNAMICS

 

 

 

THIRD LAW OF THERMODYNAMICS:

 

According to this law, “ the entropy of all perfectly crystalline solids is zero at the absolute zero temperature. Since, entropy is a measure of disorder, it can be interpreted that at absolute zero, a perfectly crystalline solid has a perfect order of its constituents particles”.



Concept :

 

Which is the correct expression that relates changes of entropy with the change of pressure of for an ideal gas at constant temperature, among the following?

 

 

 

From first law,


 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Methods of Preparation of Alchohals

 

 

Methods of preparation

 

1.From alkyl halides:-

 

    

 

Not suitable for preparation of tertiary alcohols because tertiary halides, with strong base, prefer to undergo E2 elimination reaction.

 

 

2.By reduction of carbonyl compounds:

 

 

 

(H2 / Ni) is a very strong reducing agent, desides carboxyl, it also reduces olefinic bonds. A better reagent is which do not affect olefinic bonds.









4.Hydrolysis of Esters:

5.Hydration of alkenes:

 

 

 

6.Hydroboration – oxidation: (anti – markovnikov’s hydration of alkenes)



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