Rates of Reaction.

... Rates of Reaction Aim: To investigate the rate of reaction between marble chips (CaCO3) and hydrochloric acid. Method: We will be using four different strengths of hydrochloric acid and react it with CaCO3 and record the vary in the level of CO2 produced in 30 seconds. To keep this a fair test we will be using exactly 30 seconds of reaction time and exactly 8g of CaCO3 and this will ensure that this is a fair test. The item that may need most controlling will be the time that we count because the CO2 level needs to be read at exactly 30 seconds. Temperature Concentration Surface Area HOT HIGH NOT BROKEN COLD LOW BROKEN Collision Theory: The collision theory tells us what variables may be changed to speed up the rate of reaction; these are heat, concentration, and surface area. * Heating the solution causes the particles to move faster making the chance of a collision more likely therefore a faster rate

want to read more? →