Question

Give an example of each of the following reaction support your answer with the balanced chemical reaction redox reaction exothermic reaction endothermic reaction neutralisation reaction precipitation reaction

Answer 1

Answer:

• A reaction in which one reactant undergoes oxidation whereas the other gets reduced during the course of reaction are termed as oxidation-reduction reactions or redox reactions. Oxidation refers to the loss of electrons or increase in oxidation state by a molecule, atom, or ion. Reduction refers to the gain of electrons or decrease in oxidation state by a molecule, atom, or ion. Consider the following redox reaction:

Burning sugars, such as glucose (C₆H₁₂O₆) and the fatty acids in the fats we eat.

C₆H₁₂O₆(aq) + 6 O₂(g) --> 6 CO₂(g) + 6 H₂O(l)

• A chemical reaction in which heat is given out is known as exothermic reaction. For example:

C(g)+O₂(g)⇒CO₂(g)+Heat energy

NaOH(aq)+HCl NaCl(aq)+H₂O(l)+Energy

• A chemical reaction in which heat energy is absorbed is known as endothermic reaction. For example:

N₂(g)+O₂(g)⇒(heat)⇒2NO

C(s)+H₂O(l)⇒(heat)⇒CO(g)+H₂(g)

• A neutralization reaction can be defined as a chemical reaction in which an acid and base quantitatively react together to form a salt and water as products. In a neutralization reaction, there is a combination of H+ ions and OH– ions which form water. A neutralisation reaction is generally an acid-base neutralization reaction.

For example:

HCl + NaOH → NaCl + H2O

• The chemical reaction in which a white coloured substance which is insoluble in water (precipitate) is formed then it is known as precipitation reaction.

Na₂SO₄(aq)+BaCl₂(aq)⇒BaSO₄(s)+2NaCl(aq)

In this reaction Barium sulphate is a white colour precipitate and it is insoluble in water.

Answer 2

Answer:

Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.Nov 4, 2020

Explanation: