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Write the net ionic equation for the equilibrium that is established when barium

ID: 1002776 • Letter: W

Question

Write the net ionic equation for the equilibrium that is established when barium nitrite is dissolved in water.

(Label as acidic, basic, or neutral)

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Write the net ionic equation for the equilibrium that is established when ammonium chloride is dissolved in water.

(Use H3O+ instead of H+.)

(Label as acidic, basic, or neutral)

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Write the net ionic equation for the equilibrium that is established when ammonium chloride is dissolved in water.

(Use H3O+ instead of H+.)

(Label as acidic, basic, or neutral)

Explanation / Answer

1. Ans :- Ba(NO2)2 on hydrolysis gives a strong base Ba(OH)2 and weak acid HNO2 , therefore the resultant solution must be basic .

Chemical equation is :

Ba(NO2)2 + 2H2O <-------------> Ba(OH)2 + 2HNO2

strong base weak acid

ionic equation is :

Ba2+ + 2NO2- + 2H2O <-------------> Ba2+ + 2OH-    + 2HNO2

Net ionic equation is :

2NO2- + 2H2O <-------------> 2HNO2 + 2OH-   

2.Ans :- NH4Cl on hydrolysis gives a strong acid HCl and weak base NH4OH , therefore the resultant solution must be acidic .

Chemical equation is :

NH4Cl + H2O -------------> NH4OH + HCl

weak base strong acid

Ionic equation is :

NH4+ + Cl-   + H2O -------------> NH4OH    + H+ + Cl-

Net ionic equation is :

NH4+   + H2O -------------> NH4OH    + H+