Chapter 19.2, Problem 27SSC

Interpretation Introduction

Interpretation:

The conditions under which redox reaction takes place is to be explained.

Concept introduction:

It involves the presence of acidic or basic medium.

It is based on the fact that a reaction is balanced if number of atoms of species on left side is equal to right side and net charge on left side is equal to right side.

Answer to Problem 27SSC

Balancing the equation means:

Number of atoms of species on left side is equal to right side and net charge on left side is equal to right side.

Ionic reactions involve ions which are to be balanced.

As the acidic and basic medium are provided by charged species. So these conditions should be previously being mentioned.

Explanation of Solution

Presence of acidic or basic medium changes the number of ions present in the reaction.

So, this change is to be involved before balancing the redox reaction.

Conclusion

Thus to balance an ionic reaction, it is necessary to know about the conditions in which reaction is taking place.