# What term best describes the type of reaction that happens when a molecule or compound reacts with another molecule or compound, producing two new molecules or compounds?

Dec 21, 2017

$= \text{Double Displacement Reaction}$

#### Explanation:

The ff. are some general types of this type of reaction:

1. The reaction between an acid and a base to yield salt and water; e.g.,
$2 K O H \left(a q\right) + {H}_{2} S {O}_{4} \left(a q\right) \to {K}_{2} S {O}_{4} \left(a q\right) + 2 {H}_{2} O \left(l\right)$

2. The reaction between a salt and an acid to form a salt of the acid and a second acid that is volatile; e.g.,
$2 K N O \left(a q\right) + {H}_{2} S {O}_{4} \left(a q\right) \to {K}_{2} S {O}_{4} \left(a q\right) + 2 H N {O}_{3} \left(g\right)$

3. The reaction of some soluble salts to produce and insoluble salt and soluble salt; e.g.,
$A g N {O}_{3} \left(a q\right) + N a C l \left(a q\right) \to A g C l \left(s\right) + N a N {O}_{3} \left(a q\right)$