Question

define coefficient of restobtain its value for an elastic collision
and a perfectly inelastic collision.​

Answer 1

$\huge \fcolorbox{red}{pink}{Asnwer :)}$

➡Coefficient of restitution is defined as the ratio of velocity of separation to the velocity of approach

It can be written as mathematically ,

$\large \sf \fbox{Coefficient \: of \: restitution = \frac{ v_{2} - v_{1} }{u_{1} - u_{2}} }$

Where ,

• V2 - V1 is the velocity of separation
• U1 - U2 is the velocity of approach

➡The coefficient of restitution is denoted by " e "

➡The values of coefficient of restitution (e) for :

• Elastic collision is 1
• Perfectly inelastic collision is 0

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Answer 2

Explanation:

General Methods of Preparation of Haloalkanes

1. From Alcohols

In Groove’s method, ZnC12 is used to weaken the C-OH bond. In case of 3° alcohols, ZnC12 is not required.

The reactivity order of halogen acids is HI > HBr > HCl.

Darzen procedure is the best method for preparing alkyl halides from alcohols since both the by products (SO2 and HCl) are gaseous and escape easily.