Temperature's Effect on Rate of Reaction

Temperature's Effect on Rate of Reaction

Planning

The Equation being used is: -CaCo3 + HCL → CaCl2+H2O + CO2

CaCo3 =Marble Chips.

HCL =Hydrochloric Acid.

CO2 =How much gas is given off.

My prediction is that if you change the temperature it will make the

reaction happen faster because I will be using the Collision Theory as

background information. When you heat up the particles you are giving

them kinetic energy, so heating the chemicals results in the particles

moving faster. When the particles are moving faster they collide more

often, and harder with other particles, creating more reactions, more

often. Making the final reaction a lot faster, than it would be if the

temperature weren't changed.

I believe that temperature is the main affect of the reaction but

catalyse, surface area and the concentration of the acid are also used

to affect the final reaction.

Catalysts affect the rate of the reaction by either speeding it up or

slowing it down. A catalyst provides a surface where the particles can

meet to react. The reactions taking part need less energy transferred

to make successful collisions.

Surface area can affect the rate of a reaction by if there is a larger

surface area there is more likely to be more frequent collision.

Where as if the surface area is small the is less chance for

collisions to occur. That's why I am using the smaller version of the

marble chips so there is a larger surface area to help the reaction

happen quicker.

The concentration of the acid affects the rate of reaction by the

higher the concentration the more particles there will be, so there is

a chance of more frequent collisions.

In a previous experiment I collected the gas Hydrogen, when reacting

an acid and magnesium strips together. The chemicals used were

hydrogen and magnesium. We dropped the magnesium strip in the hydrogen

and timed how long it took for 30ml of gas to be given off. These were