Na₂CO₃, NaHC₂O₄ and FeCl₃ are basic, acidic and acidic respectively.
<h3>Why pH is used for?</h3>
pH scale is used to define the nature of a substance as acidic, basic or neutral. Value from 0 to 6.9 shows the acidity, 7 shows the neutrality and from 7.1 to 14 shows the basicity.
- Na₂CO₃ is basic in nature, as it is formed by the reaction between strong base and weak acid.
- NaHC₂O₄ is an acid, as in it carboxylic group is present.
- FeCl₃ is acidic in nature as it is made from strong HCl acid.
Hence, Na₂CO₃, NaHC₂O₄ and, FeCl₃ are basic, acidic and acidic respectively.
To know more about acidity and basicity, visit the below link:
brainly.com/question/3103303
#SPJ4