#NH_4OH + HCl(aq) = NH_4Cl(aq) + H_2O(l)# no significant change can be noticed How to make sure that a reaction is really taking place ?
Can you not use an indicator?
You titrate ammonia with hydrochloric acid......
At the stoichiometric endpoint, the pink dissipates to colourless. And there are other indicators to use if you don't like pink.