Plan for rate equation cw

Chemistry Coursework- Planning


Introduction

In this piece of coursework I will attempt to design an experiment that will lead to a graphical procedure to determine the rate equation for the reaction between sodium thiosulphate and hydrochloric acid

Scientific knowledge

Before any chemical reaction occurs two or more molecules of the reactants must successfully collide together in the right orientation (the correct angle), the more collisions the faster the reaction rate. Concentration is just one of many factors which can affect this reaction rate and it is this factor which we will use to determine the rate equation of the reaction we will be monitoring.

“For many reactions involving liquids or gases, increasing the concentration of the reactants increases the rate of reaction.” (www.chemguide.co.uk)


Using an acid as an example, the higher the concentration of the acid the more H+ ions are present th...