Question

a salt solution that does not react with Ammonium hydroxide

Answer 1

CuCl2( aq )+ 2NH4OH( aq)= 2NH4Cl (aq) +Cu( OH)2{solid}

Answer 2

Ammonium hydroxide reacts with copper(II) chloride producing solid copper(II) hydroxide, which is a precipitate (a solid), and ammonium chloride, which is a salt.