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IMPORTANT PROPERTY OF, SOLID STATE REACTION, , 1- Solid state reaction are diffussion controlled process( migration of, ion), 2-In solid state reaction mixing does not occurs at the molecular level., , 3-In all type solid state reaction at least one of the reactant must diffuse, towards the other reactant. we], , 4-The solid state reaction generally depend on the biography of the, solid ie method of the preperation storage condition and primary, treatment. YY, , 5-Defect dislocation generally controlled the protess diffussio, TAME Nasr ), SS HEMRY, , Q A, , —, , ~~

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__ “This type of reaction are also common in solid state, reaction becauause both of the reactants are, generally solid this types of reaction need more temp, i.e more than 1000 c., , \~, , 4, , ¢ 4- Gas solid reaction-:, , ¢ Tarnishing reaction are very common example gas, solid reaction this terms (tarnishing) is used for a, process in which a solid reaction with the gas and to, form a solid compound and which build up a thick, _. layer of the product between the two reactants., S-GHEMISTRY, \ a, ©

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¢ EXAMPLE-;, * Oxidation of metals are very common example these type ofreaction, , ~~, , ~ * Generally depends on the compactness of the product layer which is, formed in b/w the reactant this type of reaction is a very good, example of diffussion controlled process., , * 5-:SOLID LIQUID REACTION-:, * CEMENT+MOISTURE=SOLID, , ¢ The corrosion of anodic dissociation and electro decomposition of, metals are common example of this type of reaction., , * The hydration of acement is also example of this class., , SZehEMISTRY, Os