What are the two driving forces that cause single replacement reactions to occur?

Answer 1

There are several factors:

1. Liberation of heat (exothemic reactions are driven)

2. Free energy - change in free energy should be negative

3. Entropy - An increase in entropy drives a reaction

4. Equilibrium shift - Removing products drives reaction

Answer 2

Randomness. As far as forces go i believe you can end up with a pressure if you have two different concentration on opposite sides of a membrane. Cells have been know to explode as a result of this effect.

Wikipedia.org, "The World's Encyclopedia" really says it best

Search 'Molecular diffusion"

"Molecular diffusion, often called simply diffusion, is a net transport of molecules from a region of higher concentration to one of lower concentration by random molecular motion. The result of diffusion is a gradual mixing of material. In a phase with uniform temperature, absent external net forces acting on the particles, the diffusion process will eventually result in complete mixing or a state of equilibrium. Basically, it is the movement of molecules from an area of high concentration to a lower area."

Answer 3

I prefer to call it single displacement. Anyways.

The two reactants displace each other(Sometimes) and cause single displacement reactions. I know one thing that would affect it to occur would be the reactivity of the reactants, not sure about another

Answer 4

1. Formation of a solid

2. Formation of water

3. Transfer of electrons

4. Formation of a gas

Answer 5

The three driving forces for double replacement reactions are formation of a liquid, formation of a solid, and formation of a gas.

Answer 6

formation of a gas

formation of a solid

fomation of water

transfer of electrons

Answer 7

1. Formation of a solid

2. Formation of water (H2O)

3. Transfer of electrons

4. Formation of a gas

Answer 8

The short answer is: differences in chemical potential resulting from differences in concentration.

Answer 9

Energy Spread, heat is being released and when heat or energy is released that is known as an exothermic reaction.