Question

Difference between the two reaction-mg+2hcl gives mgcl2+h2 and naoh+hcl gives nacl+h2o

Answer 1

Note that

Mg + Hcl is Substitution reaction Mg Displaces Hydrogen

Whereas

Naoh + hcl = Neutralization Reactions

Answer 2

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1 st Reaction:-

agno3 + hcl = agcl +hno3

This reaction in the form of ,

AB+C ---> A+BC

This type of reaction is known as Displacement Reaction.

Displacement Reaction:-

One reactant is being displaced with another reactants.

2 nd Reaction:-

mg +2hcl = mgcl2 + h2

This reaction is in form of

AB+CD. -----> AD+BC

This type of reaction is known as Double Displacement Reaction.

Double Displacement Reaction:-

Any two reactants in the reaction exchange with each other to form a new compound.

Hope it will help you