How can the presence of ammonium salts in solution be detected. Write the equation of the corresponding reaction

How can the presence of ammonium salts in solution be detected. Write the equation of the corresponding reaction, indicate the signs of this reaction?

The presence of ammonium salts in the solution can be detected by the reaction of the interaction of the salt with alkali, the released ammonia:
Abbreviated: NH4 + + OH- = NH3 + H2O

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