Answer:
toxic and harmful best describes the two substances that react to form salt.
Explanation:
Salt formation takes place by the reaction of acid and base.
It is also known as the neutralization reaction in which reaction occurs between acid and base react that forms a salt and water.
[tex]HCl+NaOH\rightarrow=NaCl+H_2O[/tex]
[tex]HCl[/tex](acid)
[tex]NaOH[/tex](base)
[tex]NaCl[/tex](salt)
Acid and Base both are toxic and harmful in nature.
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