Which statement best identifies and describes the oxidizing agent in the reaction? 2al + 3br2 → 2albr3 al is the oxidizing agent because its oxidation number increases. al is the oxidizing agent because its oxidation number decreases. br2 is the oxidizing agent because its oxidation number increases. br2 is the oxidizing agent because its oxidation number decreases.

Option (d) is the correct answer.

Explanation:

An oxidizing agent is a specie which accepts electrons and gets reduced in a chemical reaction.

In the given reaction,

Oxidation state of Al changes from 0 to +3, therefore, it is reducing agent. Whereas oxidation state of Br is changing from -2 to -3 this means Br is gaining electrons, therefore, it is an oxidizing agent.

Thus, we can conclude that the statement is the oxidizing agent because its oxidation number decreases.

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

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