The effect of concentration of hydrochloric acid on the rate of reaction between hydrochloric acid and magnesium.

Prediction:

I predict that when the concentration of hydrochloric acid is higher, the speed of the formation of the gas (hydrogen) will increase. In this experiment I also expect the speed of the reaction to be proportional to the concentration of hydrochloric acid. If the concentration of the acid doubles, I expect the speed to double. I also predict that the greatest rate of reaction will be as soon as the reactants come into contact and as the reaction continues the rate of reaction will decrease.

Linking prediction to theory:

The collision theory describes how the rate of reaction ( the speed in which a reaction takes place) will increase as the concentration of hydrochloric acid increases. This is due to the knowledge that particles are closer together in a concentrated solution. The closer the particles are, the more often the particles collide. With more collisions comes a greater chance of the reactants reacting. This also explains why I can predict that the greatest rate of reaction will be found as the reactants have come into contact, as they are both at their highest concentrations, and the rate of reaction decreases as the reaction continues as the concentration of the reactants decreases.

Safety: