Question

Hey


Write two - two examples of the following reactions .

• Combination reaction
• Decomposition reaction
• Displacement reaction
• Redox reaction
• Double displacement reaction


Just for your revision friends !!

Thanks ×D

Answer 1

2H2 + O2----->2H2O

2 S      +    3 O2 --------->  2 SO3 
 

2 Fe   +   O2  --------->  2 FeO

                                       CaCO3   ---------->    CaO     +      CO2 
                                              2 H2O ----------->  2 H2    +     O2

2 KClO3 ----------->  2 KCl   +     3 O2 
                                   
Zn    +     2 HCl   ---------->  H2    +  ZnCl2

Cu   +   2 AgNO3  ----------->  2 Ag    +    Cu(NO3)2 

 H2    +   2 AgNO3 ----------->  2 Ag   +   2 HNO3 

2 Na   +  2 H2O  ----------->  2 NaOH    +     H2 
 
HCl    +     NaOH  ----------->  NaCl   +  H2O

BaCl2   + 2 AgNO3 ---------->  2 AgCl    +   Ba(NO3)2

 CaCO3   +   2 HCl   -----------> CaCl2   +H2CO3 
                        

Answer 2

Hey


Thanks for asking it for our revision !!

Let me answer all these .

Examples of :-

• Combination reaction
( 1 ) 2H2 ( g ) + 02 ( g ) ====> 2H2O ( l )
( 2 ) CaO ( s ) + H2O ( l ) ====> Ca( OH )2 ( aq )

• Decomposition reaction
( 1 ) CaCO3(s) + (heat) ====> CaO ( s ) + CO2( g )
( 2) 2AgCl ( s) + (sunlight) ==> 2Ag( s) + Cl2 ( g )

Here heat and sunlight are catalyst in these reactions .

• Displacement reaction
( 1 ) Zn( s ) + CuSO4( aq ) ==> ZnSO4(aq) + Cu(s)
(2) Fe(s) + CuSO4(aq) ===> FeSO4(aq) + Cu(s)


• Redox reaction
( 1 ) CuO + H2 + ( heat ) ===> Cu + H2O
( 2 ) ZnO + C ====> Zn + CO


• Double displacement reaction
( 1 ) Na2SO4(aq) + BaCl2(aq) ===> BaSO4(s) + 2NaCl ( aq )
( 2 ) Fe2O3 + CuSO4 ===> Fe2(SO4)3 + CuO



Here is all your answers .


thanks :)