(e) Indigestion tablets can be made from magnesium oxide. The magnesium oxide
neutralises some of the hydrochloric acid in the stomach.
Complete the word equation for the reaction between magnesium oxide and
hydrochloric acid.
+
water.
hydrochloric acid
+
magnesium oxide

All the oxides and hydroxides of metals are basic in nature.

Magnesium oxide is also basic in nature and is a water insoluble base.

When a dilute acid reacts with a base it forms salt and water because the acidity and basicity of the acid and base respectively neutralise each other.This process is known as neutralisation reaction.

When MgO reacts with HCl it forms MgCl2 and water.

In equation form

MgO + 2HCl — MgCl² + H2O

a is the answer to this question

explanation:

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.