The Process of Developing Models Economics is a social science It studies societies and the human interactions within those societies Human interactions are complex and are influenced by man...
Core Practical 16: Preparation of Aspirin This practical covers a number of key laboratory skills use appropriate apparatus to record a range of measurements use water bath or electric heate...
Core Practical 15: Analysis of Inorganic and Organic Unknowns Testing for positive ions Simple test tube reactions can be done to identify the following positive ions: Group 2 ions (M2+) Amm...
Core Practical 12: Preparing a Transition Metal Complex Method Weigh between 1.4 g and 1.6 g of copper(II) sulfate. To do this you should weigh a test tube and record its mass. Then add the ...
Core Practical 11: Redox Titration Redox Titrations In a titration, the concentration of a solution is determined by titrating with a solution of known concentration. In redox titrations, an...
Core Practical 14: Finding the Activation Energy of a Reaction In this practical the activation energy for the reaction between bromide ions and bromate(V) ions will be determined BrO3- + 5B...
Core Practical 13a: Titrimetric Methods The reaction between iodine in an acidic solution and propanone is CH3COCH3 (aq) + I2 (aq) → CH3COCH2I (aq) + H+ (aq) + I- (aq) We can follow the rate...
Core Practical 10: Investigating Electrochemical Cells Measuring the EMF of a cell To measure a cell EMF you will need Two small beakers, around 75 cm3 capacity Strips of suitable metals suc...
Core Practical 9: Finding Ka for a Weak Acid The Ka of a weak acid may be determined by finding the pH at the half equivalence point At the half equivalence point Ka = [H+] Key steps in the ...
