Question

manganese dioxide when reacts with hydrochloric acid forms manganese chloride, water and chloride write a balanced chemical equation for this identify reducing and oxidizing agent

Answer 1

$MnO_2 + 4HCl -------> 2H_2O+Cl_2+MnCl_2$

The oxidising agent is MnO2 because it's oxidation state changes from +4 in Mn02 to +2 in MnCl2 which means it is reduced. The substance which oxidises but get reduced itself is oxidising agent.

The reducing agent is HCl because it's oxidation states changes from -1 in HCl to 0 in Cl2. So HCl is getting oxidised itself but reducing MnO2.

Answer 2

Answer:

Explanation:

The chemical equation for the reaction is:

MnO₂ + HCl  ⇒ MnCl₂ + H₂O + Cl₂

On counting the number of atoms of each element on either side of the equation we can see that Mn is balanced whereas all other atoms are not balanced. Hence we need to balance this equation.

MnO₂ + 4 HCl  ⇒ MnCl₂ + 2 H₂O + Cl₂

Now, since MnO₂ is losing an oxygen atom and converting to MnCl₂, it is being reduced and hence it is an oxidising agent.

On the other hand HCl is getting converted into H₂O which is addition of oxygen and hence oxidation and hence it is a reducing agent.