Question

Identifi the difference between the two reactions 1. agno3 + hcl = agcl +hno3 2. mg +2hcl = mgcl2 + h2

Answer 1

1. AgNO3 + HCl → AgCl + HNO3

• Displacement Reaction

(When more reactive element displaces less reactive element from it's salt solution)

• General equation for displacement reaction is A + BC → B + AC
• Single displacement reaction.
• It is a slow reaction.
• Change in colour takes place and no precipitation is formed in it.

2. Mg + 2HCl → MgCl2 + H2

• Double Displacement Reaction

(Reaction in which exchange of ions takes place.)

• General equation for double displacement reaction is AB + CD → AD + CB
• Double displacement reaction (as two displacement takes place in it).
• It is a fast reaction.
• Formation of precipitation takes place.

Answer 2

Explanation:

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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

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