Question

Balance this chemical equation. Choose "blank" for the box if no other coefficient is needed. Writing the symbol implies "1."

Answer 1

Answer: $3NH_4OH+AlCl_3\rightarrow Al(OH)_3+3NH_4Cl$

Explanation: A double displacement reaction is one in which exchange of ions take place.

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

$3NH_4OH+AlCl_3\rightarrow Al(OH)_3+3NH_4Cl$