1.

All energetically effectivecollisionsdo notresult in a chemical change. Explain withthe help of an example.

Answer»


SOLUTION :Only effective collision lead to theformation of products. It means thatcollisionsin whichmolecules collide with suffiecentkinetic energy(called thresholdenergy =activation energy+ energypossessed by reacting species.)
Andproperorientation lead toa chemicalchangebecause it faciliataes the breakingof old bonds between(reactant) moleculesand FORMATIONOF thenewones i.e., in porducts.e.,g formationof METHOD FOM bromometheane dependsupon the orientation of thereactant molecules.

The proper orientation of reactan molecules leads to bond formationwherasimproper orientationmakesthem simplyblackand no products are formed .
To account for effectivecollisons, anotherfactor P (probabilityor steric factor) isintroduced`K = PZ_(AB)e^(-E_(a)//RT)`


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