Question

2a. Write down the names of the new substances formed when each of the following substance reacts with dilute hydrochloric acid.

i) Ammonia

ii) Sodium hydroxide

iii) Calcium carbonate​

Answer 1

Chemical reactions must consists of reactants and products.

What is a chemical reaction?

A chemical reaction is said to occur when two or more substances interact and lead to the formation of a new substance. Another name for a chemical reaction is chemical change.

Now consider the reaction;

HCl(aq) + NH3(g) -----> NH4Cl(aq)

HCl(aq) + NaOH(aq) ---->  NaCl(aq) + H2O(l)

CaCO3 + 2HCl(aq) -----> CaCl2(aq) + CO2(g) + H2O(l)

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