Answer
Balanced equation:
$NH_3(g) + HCl(g) --\gt NH_4Cl(s)$
Type: Combination reaction.
Work Step by Step
1. Count the atoms of each element in both sides of the reaction.
$NH_3(g) + HCl(g) --\gt NH_4Cl(s)$
Reactants: $N = 1$, $H = 4$ and $Cl = 1$
Products: $N = 1$, $H = 4$ and $Cl = 1$
- The equation is completely balanced.
2. Classify the reaction.
That reaction follows the pattern: $A + B --\gt AB$. Where two different compounds combine to form a single product. This type of reaction is called: "Combination reaction".