Which pairing matches the type of substance with the item it donates?

acid: electron pair; base: h+ ion

acid: proton; base: electron pair

acid: h+ ion; base: proton

acid: electron pair; base: proton

Option (B).

Explanation:

Acids may be defined as the substance that shows red color in the litmus paper whereas bases change the litmus solution to the blue color. Acids have pH less than 7 and bases has pH more than 7.

The acids may be defined as the substance that release the proton or hydrogen ions when dissolved in the solution. The base has the ability to donate the electron pair that may be accepted by the acids.

Thus, the correct answer is option (B).

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in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.