Question

magnesium displaces hydrogen from dilute HCL acid write the reaction and explain ​

Answer 1

AnswEr :

Magnesium displaces Hydrogen from Dilute Hydrochloric Acid

The reaction will be :

$\sf Mg(s) + HCl (g) \longrightarrow H_2(g) + MgCl_2(s)$

• We know that Magnesium is more reactive as compared to Hydrogen

• Affinity of Magnesium to Chlorine is greater than Affinity of Hydrogen to Chlorine.

• As a result, Hydrogen is displaced from HCl and is evolved as Hydrogen Gas

Reactivity Series of Metals

$\begin{array}{| c | } \cline{1-1} \sf Reactivity \ Series \\ \cline{1-1} \sf Potassium \\ \cline{1-1} \sf Sodium \\ \cline{1-1} \sf Magnesium \\\cline{1-1} \sf Aluminium \\ \cline{1-1} \sf Zinc \\ \cline{1-1} \sf Tin \\\cline{1-1} \sf Lead \\\cline{1-1} \sf Hydrogen \end{array}$

The following table depicts the decreasing order of reactivity of elements till Hydrogen

Answer 2

Answer:

Mg + HCl ----> MgCl2 + H2

When Magnesium reacts with hydrochloric acid it gives magnesium chloride and hydrogen gas. According to reactivity series , Mg is highly reactive than hydrogen , so magnesium displaces hydrogen from hydrochloric.

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