Question

Write equations for the reaction of an acid with ; a) a metal (b) a metal carbonate (c) a metal hydrogencarbonate (d) a base (e) a metallic oxide .

Answer 1

a) Mg + 2H+ --> Mg2+ + H2

b) MgCO3 + 2H+ --> Mg2+ + H2CO3.

c) Mg(HCO3)2 + 2H+ --> Mg2+ + 2H2CO3.

d) H+ + OH- --> H2O

e) MgO + 2H+ --> Mg2+ + H2o

Answer 2

Concept Introduction:-

In the chemical reaction, one or more substances—also known as reactants—are changed into one may be more additional substances—also known as products.

Explanation:-

A question has been provided to us

We need to find the solution to the question

$(a)$ The reaction of acid with metal forms salt and hydrogen gas

$Zn(m)+2HCl(dil)\rightarrow ZnCl_2(s)+H_2(g)$

$(b)$ When an acid reacts with a metal carbonate, then a salt, carbon dioxide gas and water are produced.

Example: When dilute hydrochloric acid reacts with sodium carbonate, then sodium chloride, carbon dioxide gas and water are formed.

$Na_2CO_3(s)+2HCl(aq)\rightarrow2NaCl(aq)+CO_2(g)+H_2O(I)$

$(c)$ When an acid reacts with a metal hydrogen carbonate, then a salt, carbon dioxide gas and water are formed.

$NaHCO_3(s)+HCl(aq)\rightarrow NaCl(aq)+CO_2(g)+H_2O(l)$

$(d)$ When an acid reacts with a base then a salt and water are formed. Such a reaction is termed as a neutralization reaction.

When hydrochloric acid reacts with sodium hydroxide solution then a neutralization reaction takes place to form sodium chloride and water.

$NaOH+HCl\rightarrow NaCl+H_2O$

$(e)$ Acids react with metal oxides to form salt and water. For example, Copper (II) oxide, a metal oxide,  reacts with dilute hydrochloric acid to form copper chloride and water.

$CuO(s)+2HCl(aq)\rightarrow CuCl_2(aq)+H_2O(l)$

Final Answer:-

The correct answer is the reaction of the chemical equation.

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