Question

A molecule that binds up excess hydrogen ions in a solution is called a(n) ________.
1. acid
2. isotope
3. base
4. donator

Answer 1

a base

isotopes have nothing do with binding hydrogen ion

acids donate hydrogen

donaters just donates‍♀️

Answer 2

A BASE is a molecule that binds up excess hydrogen ions in a solution.

WHAT IS A BASE?

• According to the Bronsted-Lowry theory of acids and bases, a base is a substance that accepts hydrogen ions (H+) which was donated by an acid.

For example, in the chemical reaction below:

HCl (aq) + NH3 (aq) → NH4+ (aq) + Cl- (aq)

• NH3 (ammonia) is the base because it accepts the hydrogen ion (H+) donated by hydrochloric acid (HCl) to form ammonium (NH4+).

Hence, in a solution, a base binds up any excess or released hydrogen ion.

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