The equation of reaction of manganese with hydrochloric acid to form hydrogen gas and Mn 2 + has to be balanced. Concept Introduction: In order to balance any redox reaction method used in acidic medium is summarized below. In the first step oxidation number of each element is identified. The overall reaction is divided into oxidation and reduction held cell based upon changes observed in oxidation states. Each side of half-cell equation is balanced except H and O . The electrons lost are made equal to electron gained so as to add two half-cells and formulate overall reaction equation. In next step O atoms are balanced by addition water molecule. For the acidic medium, excess electrons are neutralized by addition of H + ions to each side.

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Chapter 17, Problem 46AE

Interpretation Introduction

Interpretation:

The equation of reaction of manganese with hydrochloric acid to form hydrogen gas and Mn2+ has to be balanced.

Concept Introduction:

In order to balance any redox reaction method used in acidic medium is summarized below.

In the first step oxidation number of each element is identified.

The overall reaction is divided into oxidation and reduction held cell based upon changes observed in oxidation states.

Each side of half-cell equation is balanced except H and O. The electrons lost are made equal to electron gained so as to add two half-cells and formulate overall reaction equation.

In next step O atoms are balanced by addition water molecule.

For the acidic medium, excess electrons are neutralized by addition of H+ ions to each side.

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