Answer: [tex]NaCl[/tex] forms a neutral solution on dissolving in water.
Explanation:
When a weak acid and strong base reacts, it leads to the formation of a basic solution.
When a strong acid and weak base reacts, it leads to the formation of acidic solution.
When a strong acid and strong base or weak acid and weak base reacts, it leads to the formation of a neutral solution.
1. [tex]NaCl[/tex] forms a neutral solution as it is formed by combination of strong acid [tex]HCl[/tex] and a strong base [tex]NaOH[/tex].
2. [tex]KNO_2[/tex] forms a basic solution as it is formed by combination of weak acid [tex]HNO_2[/tex] and a strong base [tex]KOH[/tex].
3. [tex]NaCN[/tex] forms a basic solution as it is formed by combination of weak acid [tex]HCN[/tex] and a strong base [tex]NaOH[/tex].
4. [tex]NH_4NO_3[/tex] forms a acidic solution as it is formed by combination of strong acid [tex]HNO_3[/tex] and a weak base [tex]NH_4OH[/tex].
5. [tex]FeCl_3[/tex] forms a acidic solution as it is formed by combination of strong acid [tex]HCl[/tex] and a weak base [tex]Fe(OH)_3[/tex].
