Chemical Properties of Acids and Bases

A solution of a base with pH $12.1$ is given.

Which of the following can be done to decrease its pH?

P) add distilled water to it.

Q) add a solution of a different base with pH 8.7.

R) add a few drops of an acid with an unknown pH.

What happens when a solution of an acid is mixed with a solution of a base in a test tube?
(i) The temperature of the solution increases.
(ii) The temperature of the solution decreases.
(iii) The temperature of the solution remains the same.
(iv) Salt formation takes place.

Metallic oxides are ______ in nature, but non-metallic oxides are ______ in nature. The information in which alternative completes the given statement is:

Copper sulphate can be produced by reacting copper carbonate with sulphuric acid. Water and carbon dioxide are also produced. Which of these compounds is a salt?

Limescale is a hard deposit that can block pipes. Limescale is mainly formed from calcium carbonate, which is a base. Limescale remover contains an acid, often hydrochloric acid, which reacts with the limescale to form calcium chloride. Water and carbon dioxide are also produced.

Which of the products is a gas?

Limescale is a hard deposit that can block pipes. Limescale is mainly formed from calcium carbonate, which is a base. Limescale remover contains an acid, often hydrochloric acid, which reacts with the limescale to form calcium chloride. Water and carbon dioxide are also produced.

Limescale is a hard deposit that can block pipes. Limescale is mainly formed from calcium carbonate, which is a base. Limescale remover contains an acid, often hydrochloric acid, which reacts with the limescale to form calcium chloride. Water and carbon dioxide are also produced.

Write a word equation for this reaction.

Identify which salt is produced from the following reactants.

Identify which salt is produced from the following reactants.

Identify which salt is produced from the following reactants.

The gas evolved when aluminium powder is mixed with sodium hydroxide solution is:

The chemical used in fire extinguishers is

The chemical equation that represents neutralization reaction among the following is

Which substance when used with butter having butyric acid can cure acidity

A diagram of the reaction of Zinc with acid is given below.

During this reaction, a gas is evolved. Write the name of the gas. (Sulphur dioxide/ Hydrogen)

Which of the following gas turns lime water milky?

NaOH(aq) + HCl(aq) → NaCl(aq) + H₂O is the example of a _____  reaction.

The reaction between an acid and a base to give a salt and water is known as a _____ reaction.

Metal is heated with dilute sulphuric acid H₂SO₄. The gas evolved is collected. The gas is _____.

Acids react with bases to form _____ and water.