Question

What is the equation for the reaction: hydrochloric acid is added to diamine silver(II) chloride?

Answer 1

When acid i.e. HCl is added to the diamine silver chloride, it forms the curdy white precipitates of the silver halide which is insoluble along with the protonation of amine. Now you can easily write the chemical reaction.

Complete answer:
First, we should know what a chemical reaction is. The reaction in which the reactants react with each other to form two or more products is known as the chemical reaction. The reactants are written on the left hand side and the products are written on the right-hand side and there is an arrow from left to the right symbolizing a complete chemical reaction.
Example: consider the general reaction as:
$A+B\to C+D$
Here, A and B are the reactants and C and D are the products and the arrow indicates the direction in which the chemical reaction occurs.
Now considering the statement as;
When gaseous hydrochloric acid is made to undergo reaction with the diamine silver (I) chloride, it results in the formation of the silver chloride and ammonium chloride. The chemical reaction is supposed to take place as;
$[Ag{{(N{{H}_{3}})}_{2}}]Cl(aq)+2HCl(aq)\to AgCl(s)\downarrow +2NH_{4}^{+}C{{l}^{-}}(aq)$
In this reaction, HCl acid protonates the amine in the diamine silver chloride, breaks the complex and results in the formation of the white precipitate of silver chloride which are insoluble in nature.

Note:
After writing the equation check whether the no of moles of each atom are same on both the sides or not and if not, then balance the chemical reaction because it helps to conserve the mass of that very atom/substance or the compound.