What are the 5 factors that can affect the rate of a chemical reaction?

Answer 1

Chemists can control rates of reactions by changing factors such as surface area, temperature, and concentration, and by using substances called catalysts and inhibitors.

A:Temperature, Concentration of the reactants, Catalyst, Surface area, the nature of the reactants, residence time and Pressure. A:

But I have to clear this about the surface area factor to all.

Heat IS a catalyst

Or the more the surface area exposed, the faster the rate of reaction?

In my reference books and certain websites,

the larger the surface area exposed, the fasterthe rate of reaction is stated.

In my opinion, the correct one should be,

the more the surface area exposed, the faster the rate of reaction.

To support my opinion, this is my explanation;

Hypothesis(my text/reference books) : The larger the surface area exposed,

the faster the rate of reaction.

The larger the surface area means that

the bigger the size of the reactants.

Let me take a cube, Cube A with 4cm sides.

1 cube has 6 surface area exposed.

4 x 4 = 16cm² ; 1 surface area is 16cm². [Larger surface area,

but slower rate of reaction.

= Doesn't support hypothesis.]

[Total surface area.]

6 x 16cm² = 96cm²

Now let me cut Cube A(same cube as before) into 4 equal pieces.

Now there are 4 cubes; let each cube be Cube B.

Then, each Cube B will be 2cm per side.

2 x 2 = 4cm² ; 1 surface area is 4cm². [Smaller surface area,

but faster rate of reaction.

= Doesn't support hypothesis.]

[Total surface area of 1 Cube B.]

6 x 4cm² = 24cm²

[Total surface area of 4 Cube B's.]

24cm² x 4 = 96cm² (To show that both cubes have the same mass.)

Conclusion : The larger the surface area exposed, the slower the rate of reaction.

Hypothesis is not accepted.

If you use the term, larger in this condition,

it is wrongly used.

Hypothesis(my text/reference books) is

the larger the surface area exposed, the fasterthe rate of reaction.

As we all know,

the cube with the larger surface area exposed will react slower

than the cube with the smaller surface area.

Into my opinion, the more the surface area exposed, the faster the rate of reaction.

I am describing the surface area exposed in terms of amount instead of size.

Hypothesis(my opinion) : The more the surface area exposed,

the faster the rate of reaction.

Taking the same cubes, Cube A and Cube B's as mentioned above,

Cube A ; 6 surface area exposed. [Less surface area exposed,

slower rate of reaction.]

Cutting Cube A into 4 equal pieces = 4 Cube B's.

(1 Cube A = 4 Cube B's.)

1 Cube B ; 6 surface area exposed.

4 Cube B's ; 6 x 4 cubes = 24 surface area exposed. [Moresurface area exposed,

faster rate of reaction.]

Conclusion : The more the surface area exposed, the faster the rate of reaction.

Hypothesis is accepted.

it is temperature in general. not just heat. heat may be a catalyst but cold is not.

Answer 2

Some indicators of a chemical reaction are:

- change of color

- change of odor

- release of a gas

- change of the temperature

- change of the viscosity

- formation of a precipitate

- change of general appearance

- possible explosion

- possible chemiluminiscence

Answer 3

light,

temprature,

ph,

enyme,

substrate concentration

Answer 4

temperature, pressure, catalyst, concentration of reactants

Answer 5

Temperature,

pH level,

amount of substance,

time to react,

concentration of substance... i think anyway sorry if didn't really help

Answer 6

Temperature, distance, molecule size, gradient size, and electrical forces.

Answer 7

The nature of the reactants

Surface area exposed

Concentration

Temperature

Catalyst

Answer 8

Concentration of reactants

Concentration of products

Temperature

Rate constants of materials involved

Solvent type

Presence of a catalyst

Answer 9

temperature, pressure, concentration, solvent, stirring, catalyst, granulation