combustion reaction!
A precipitate, water, or a gas must be produced for a double displacement reaction to occur.
Formalin is produced by mixing formaldehyde gas with water to form a solution of formaldehyde in water. The reaction is generally carried out in the presence of a catalyst, such as a base or an acid, to enhance the speed of the reaction.
decomposition
If the volume of water produced during the reaction doubled, it would indicate that the reaction produced twice as much water as before. Since water (H₂O) is composed of two hydrogen atoms and one oxygen atom, the ratio of hydrogen to oxygen in the water remains constant at 2:1. Therefore, even though the volume of water increases, the ratio of hydrogen to oxygen in the reaction does not change; it remains the same.
In this reaction, most of the water is produced in the liquid phase.
There is no reaction.
A salt and usually some other substance, most often water, is produced.
combustion reaction!
Hydrogen gas is produced when sodium is added to water. This reaction is highly exothermic and can result in the sodium igniting.
it is always water.
A precipitate, water, or a gas must be produced for a double displacement reaction to occur.
Salt and water is generally produced.
Formalin is produced by mixing formaldehyde gas with water to form a solution of formaldehyde in water. The reaction is generally carried out in the presence of a catalyst, such as a base or an acid, to enhance the speed of the reaction.
The reaction of an acid plus a base yields SALT ( and water too)
dry ice and water enjoy
Because no new substance is produced