Question

select the correct depictor (arrow type)

Select the descriptor (A, B, C, D): that best describes the relationship between the reactants and products below:

Answer 1

Concepts and reason

A reaction is given and the right descriptor for the reaction needs to be marked. The various descriptor given represents the different type of an equilibrium reaction, that is, reaction favoring either product or reactant. To put the correct descriptor, find out the relative stability of the species present on reactant side or product side and the reaction will be favored in that side only.

Fundamentals

Consider the following descriptor that represent different type of reaction or that are used to show relation between compounds as shown below:

1.: This arrow is used to show the resonance structure of the same compound. Consider the following example in which resonance structure of benzene are shown using single double headed arrow:

2.: This arrow is used to represent an equilibrium reaction which strongly favors the formation of product, that is, forward reaction. This generally happens when the product formed are more stable than the reactants.

3.: This arrow is used to represent an equilibrium reaction which strongly favors the formation of reactants, that is, backward reaction. This generally happens when the reactants are more stable than the product formed.

4.: This arrow is used to represent an equilibrium reaction which is favored in both the direction, that is, rate of forward reaction is equal to the rate of backward reaction.

Consider the reaction formed by given reactants and products as shown below:

In the above reaction, products are more stable than the reactants.

Write the given reaction with the correct descriptor based on the direction of reaction that is more favorable as shown below:

Thus, the correct descriptor is.

Ans:

Thus, the correct descriptor is.