Monthly Archives: June 2014

Analysing Data from Rates Experiments

Hi everyone!  Today you need to review what we have learned so far before your exam on Rate of Reaction!

Today we will look at how to analyse data from rates experiments.  Remember the other week, you all looked at different ways to measure the rate of reaction of the reaction between calcium carbonate and hydrochloric acid.

People did it in different ways.  You either measured the volume of gas produced over time or the mass of gas produced over time.  Sometimes, you can also measure concentration changes over time to produce a curve.

First of all let’s review the factors that affect rate of reaction in the first place.  These are:

  1. concentration
  2. surface area
  3. temperature
  4. addition of a catalyst

Can you use Collision Theory to explain how these affect reaction rate?  With a partner choose two factors each from the list above and explain to your partner how they affect reaction rate.  Then swap.  Make sure you both agree on the explanations.  You should be talking about probabilities of collisions with correct orientations and/or activation energy.

Now let’s analyse some graphs.  Have a look at the video below.

Here is a set of questions to try.  Help each other with them!  Don’t go straight to the answers!  Try and nut them out together!

Have a good weekend and see you next week!