Is it possible for a substance to act as both an acid and a base in different solutions?

Is it possible for a substance to act as both an acid and a base in different solutions?

Explanation: A substance is amphoteric (from Greek amphoteros = “each of two”) if it can act as an acid or a base. For example, aluminum hydroxide is amphoteric because it can act as a base and neutralize strong acids.

How can water be both an acid and a base?

Water can act as both an acid and a base in solution and undergoes autoionization, where it can be both an acid and a base to itself. When mixed with an acid, water accepts hydrogen ions and acts as a base. However, when water is mixed with a base, it donates hydrogen ions and acts like an acid.

What is a substance that is capable of acting as both an acid and as a base known as?

An amphoteric substance is one that is capable of acting as either an acid or a base by donating or accepting hydrogen ions.

When a chemical loses a hydrogen ion is it behaving as an acid or a base?

When a chemical loses a hydrogen ion, is it behaving as an acid or a base? A chemical that loses a hydrogen ion is behaving as an acid. You just studied 45 terms!

Which of the following behaves as both acid and base?

Key Takeaway. Water molecules can act as both an acid and a base, depending on the conditions.

Which of the following substances Cannot act as both acid as well as a base?

NH-2 can accept a proton but cannot give a proton. Hence, it cannot act as both Bronsted acid and base.

Is it possible for water to behave as both an acid and a base quizlet?

H2O can act as both acid and base. 1)Water ionizes- falls apart into ions. Why we have self ionization of water?

Can water act as an acid only?

So, depending on the circumstances, H2O can act as either a Brønsted-Lowry acid or a Brønsted-Lowry base. Water is not the only substance that can react as an acid in some cases or a base in others, but it is certainly the most common example—and the most important one.

Which of the following can behave as an acid as well as base?

Amphoteric
Amphoteric is a substance that can behave as an acid and base.

Which of the following can behave as both an acid and a base?

Water is amphoteric, which means it can act as both a Brønsted-Lowry acid and a Brønsted-Lowry base.

When an atom or molecule loses a hydrogen ion it is behaving as a an?

The Bronsted-Lowry acid-base theory defines acids as species that lose hydrogen ions ( H+ , a.k.a. protons) in a chemical reaction (and bases as species that accept hydrogen ions.) The chemical in question here loses protons and fits into the definition for Bronsted-Lowry acids.

When water behaves as an acid what does it lose?

Species, like OH- that can gain or lose a proton are said to be amphoteric. In the base reaction with the oxide ion, water behaves like an acid. In the acid reactions, it behaves like a base. Water is also amphoteric, since it can lose protons (acid) or gain protons (base).

How is the acid / base behavior of a compound defined?

The acid/base behavior of the compound is characterized by the equilibrium AH+H 2 O=A − +H 3 O +, and its equilibrium constant Keq = [A − ] [H 3 O + ]/ [AH] [H 2 O]. The p Ka of this dissociation reaction is defined as the negative logarithm of Ka, where Ka =K eq [H 2 O], thus p Ka =−log Ka.

What is the difference between an acid and a base?

An acid is a substance that donates protons (in the Brønsted-Lowry definition) or accepts a pair of valence electrons to form a bond (in the Lewis definition). A base is a substance that can accept protons or donate a pair of valence electrons to form a bond.

How do acids and bases neutralize one another?

Acids and bases will neutralize one another to form liquid water and a salt. Describe the general properties of acids and bases, comparing the three ways to define them An acid is a substance that donates protons (in the Brønsted-Lowry definition) or accepts a pair of valence electrons to form a bond (in the Lewis definition).

Which is an example of an acid reacting with a base?

Reacts with certain metals to produce gaseous H 2. Reacts with bases to form a salt and water. Acidic solutions have a pH less than 7, with lower pH values corresponding to increasing acidity. Common examples of acids include acetic acid (in vinegar), sulfuric acid (used in car batteries), and tartaric acid (used in baking).