The solution formed by combining hydrochloric acid and ammonia is .Explanation:Moles of hydrochloric acid is calculated as,Moles of ammonia is calculated as,The reaction between ammonia and hydrochloric acid is as follows,The number of moles of hydrochlroic acid is less or it act as a limiting reagent. All the moles of the hydrochloric acid will be exhautes and in the solution only moles of ammonia and ammonium ion will be left.The ICE table is as follows,The resulting components in the solution forms a buffer solution.From the ICE table,The concentration of ammonia is calculated as,The concentration of ammonium ion is calculated as,The value of for ammonia is.value is calculated as,The Henderson-Hasselbalch equation is given as,Substitute the value.