Write a net ionic equation for the reaction that occurs when aqueous solutions o

Question

Write a net ionic equation for the reaction that occurs when aqueous solutions of ammonia and hydrobromic acid are combined.

Write a net ionic equation for the reaction that occurs when aqueous solutions of ammonia and acetic acid are combined.

Write a net ionic equation for the reaction that occurs when excess nitric acid (aq) and sodium carbonate (aq) are combined.
Write a net ionic equation for the reaction that occurs when chromium(II) sulfide and excess hydroiodic acid are combined.
Write a net ionic equation for the reaction that occurs when aqueous solutions of barium hydroxide and hydrobromic acid are combined.

Write a net ionic equation for the reaction that occurs when aqueous solutions of sodium hydroxide and hydrofluoric acid are combined.

Explanation / Answer

(1) Molecular equation: HBr + NH3 ---> NH4Br

Ionic equation: H+ + Br- + NH3 ---> NH4+ + Br- ...................(i)

Canceling common factor from both sides in equation (i) i.e., Br

Therefore, Net ionic equation: H+ + NH3 ---> NH4+

(2) Net ionic equation for NH3 and CH3COOH is

NH3 +   CH3COOH --->   NH4+ +    CH3COO-

(3) Net ionic equation for HNO3 and Na2CO3 is

Molecular equation:: Na2CO3 + 2 HNO3 ---> 2 NaNO3 + H2O + CO2

Ionic equation:: 2 Na+ + CO32- + 2H+ + 2 NO3- ------> 2Na+ + 2 NO3-  + H2O + CO2

Net ionic equation: CO32- + 2 H+ ---------> H2O + CO2

(4) Molecular equation:: 2 HI + CaS CaI2 + H2S
Total ionic equation: 2 H+ + 2 I- + CaS Ca2+ + 2 I- + H2S
Net ionic equation: 2 H+ + CaS Ca2+ + H2S

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