Function by absorbing excess hydrogen or hydroxide ions.

Buffers function by absorbing excess hydrogen or hydroxide ions.

Buffer solution

Explanation:

Buffer is a solution which resists changes in pH when small quantities of acid or alkali are added to it.

It is formed by combination of weak acid and salt of weak acid with strong base called as acidic buffer.Example: and

Or it is formed by combination of weak base and salt of weak base with strong acid called as basic buffer buffer. Example: and

When acid is added to buffer, the buffer releases ions to neutralize the acid added and when base is added to buffer, the buffer releases ions to neutralize the base added.

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.