Question

The questions are: Find the equations for the reaction of

HCLwith MgO and HCL and Mg. How the reactions different?

Answer 1

`Mg(s) + HCl(aq) \rightarrow MgCl_2(aq) + H_2(g)`

`MgO(s) + HCl(aq) \rightarrow MgCl_2(aq) + H_2O(l)`

Step-by-step explanation:

When Mg reacts with HCl, magnesium chloride and hydrogen is formed. Mg is an active element and displaces hydrogen from HCl. So, this is a type of single displacement reaction.

`Mg(s) + HCl(aq) \rightarrow MgCl_2(aq) + H_2(g)`

When magnesium oxide (MgO) reacts with HCl, magnesium chloride and water is formed. This reaction is a type of neutralization reaction. MgO is a water insoluble base and HCl is acid. So. in this reaction, acid reacts with base to form salt
`MgCl_2`

`MgO(s) + HCl(aq) \rightarrow MgCl_2(aq) + H_2O(l)`