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In the reaction zinc replaces sodium , but as per the reactivity series it is not possible.So is this reaction correct?  If not then what must be the correct reaction??
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Asked by guptaabhinav0809 | 06 Sep, 2018, 08:56: PM
answered-by-expert Expert Answer
If you observed the above reaction, it is clear that it's not a displacement reaction. Activity series of metals applies for displacement reactions.
 
Another thing is zinc is shown amphoteric nature towards acids and bases, as it reacts with both.
 
 
 
Zinc reacts with hydrochloric acid to form zinc chloride and hydrogen gas.
 

 

                                    Zn       +    2HCl  →    ZnCl2   +      H2

 

 

Zinc is the only metal which reacts with sodium hydroxide to form sodium zincate with the release of hydrogen gas.

 

 

                                Zn    +    2NaOH  →    Na2ZnO2   +    H2

 
Answered by Ramandeep | 07 Sep, 2018, 11:50: AM

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