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  • Identify the type of each of the following reactions stating reason for your answers :   <img alt="(a) Fe_{2}O_{3}+2Al\rightarrow Al_{2}O_{3}+2Fe+heat" src="https://learn.careers360.com/latex-image/?%28a%29%20Fe_%7B2%7DO_%7B3%7Da

Identify the type of each of the following reactions stating reason for your answers :
 

(a) Fe_{2}O_{3}+2Al\rightarrow Al_{2}O_{3}+2Fe+heat

(b)Pb(NO_{3})_{2}+2KI\rightarrow PbI_{2}+2KNO_{3}

(c)ZnCO_{3}\overset{Heat}{\rightarrow}ZnO+CO_{2}

 

 

 

 
 
 
 
 

Answers (1)

(a) Fe_{2}O_{3}+2Al\rightarrow Al_{2}O_{3}+2Fe+heat

Displacement /Redox/ Exothermic reaction

Displacement -Iron is displaced by aluminium

Redox - Aluminium is oxidised and Iron is reduced

Exothermic - Heat is produced

Thermit reaction -Molten iron is produced

(b)Pb(NO_{3})_{2}+2KI\rightarrow PbI_{2}+2KNO_{3}

Double displacement reaction -  Ions are exchanged between the reactants

(c)ZnCO_{3}\overset{Heat}{\rightarrow}ZnO+CO_{2}

Decomposition reaction /Calcination - ZnCO3 decomposes to ZnO+CO2

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