Why temperature effects a rate of a reaction?

Answer 1

When the temperature of a substance is decreased, the rate of a chemical reaction will decrease, because the higher temperature will cause the particles to move faster and to increase the number and strength of the collisions. So, a lower temperature will slow the speed at which the particles move and decrease the number and strength of the collisions.

Answer 2

1. Reacting molecules move vaster so they have more collisions and
   
2. above that the more important increase of effectiveness of those collisions.

Its all in the rate constant (boltzmann factorial) 'k'.
k is known as the rate constant which is defined as:
k=A e-Ea/RT

• A is the steric factor,
  
• -Ea is negative value of the activation energy of the rate-limiting step,
  
• R is the universal gas constant (8.314 J.mol-1.K-1), and
  
• T is the absolute temperature in K (Kelvin).

Answer 3

There's always a posive correlation between temperature and reaction rate, though not linear.

According to 'Arrhenius' equation' the dependence of the rate constant k of chemical reactions on the temperature T(in absolute temperature, such as kelvins or degrees Rankine) and activation energy Ea, as shown below:

k = A.e-[Ea/R.T]

where A is the pre-exponential factor or simply the prefactor and R is the Universal gas constant.

Answer 4

Increasing the temperature increases the rate of entropy within a system. Pretty much, it increases the rate at which the stuff in a beaker collides with oneanother. As an examPle, cold water just sits, while hot water develops convection currents causing the water on the bottom to rise to the surface around in a circle. Hope this helps.

Answer 5

This is very simple!as we know that atoms undergo reactions to gain stability their selves.They do that by:

1.Giving out electrons,

2.Accepting electrons in,

3.Sharing electrons.

Now let us suppose the bond to be an ionic bond.Let us think the atoms forming the bond are "SODIUM" and "CHLORINE". When they come close the sodium atom loses an electron and the chlorine gains it .They form an ionic bond.Place the two atoms in different glass spheres connected by a glass cylinder.when u open the connection between them they move towards themselves.Now go heating it.They move with more speeds.Thus the bond forms faster than in the previous experiment.So when we increase the temperature,the reaction would be faster.Please tell me whether the answer is right or wrong.

Answer 6

The reaction rate changes as the temperature increase due to the added energy and weakening bonds. The reaction rate decreases as the temperature drops and the molecules slow down.

Answer 7

As concentration increases, your rate of reaction will increase for the simple reason that there is more reactant in a more concentrated solution than in a more dilute solution.