College Example Essays

Acid Rain is rain, snow or fog that is polluted by acid in the atmosphere and damages the environment. When fossil fuels are burned they release mostly CO2, but they also release two harmful gases, sulphur dioxide and various nitrogen oxides. The sulphur dioxide, SO2, comes from the sulphur impurities …

Esterification is the reaction of a carboxylic acid with an alcohol. This experiment is an esterification reaction between ethanoic acid and propan-1-ol when heated: CH3COOH(aq) + CH3CH2CH2OH(aq) <=> CH3COOCH2CH2CH3(aq) + H2O(l) The formation of propyl ethanoate is particularly well-suited to the determination of the equilibrium constant. The reaction is slow …

I am given an investigation which I have to plan myself; it is about an unknown organic compound that is either an alcohol, aldehyde, ketone, carboxylic acid, ester or phenol. I have to suggest a series of simple chemical tests, which could be done in test tubes, to distinguish the …

Group A Time when reaction mixture was added to NaHCO3 (s) 315 610 886 1220 1500 1808 Volume of Na2S2O3 added (cm3) 19.95 18.70 17.90 16.80 16.10 15.20 Group B Time when reaction mixture was added to NaHCO3 (s) 369 638 858 1175 1510 1793 Volume of Na2S2O3 added (cm3) …

Materials used: * Beaker * Conical Flask * Measuring Cylinder of 15 cc * Burette * Indicator * Clamp Stand * Pipette * Beam Balance * HNO3 of 2M concentration * NaOH of 2M concentration Procedure : * Crush the sample of marble in to small pieces, and take 1 …

Objective: To determine the x in the formula Fe (NH4)2(SO4)2�xH2O by titration against a standard solution of potassium manganate (VII) (permanganate). Theory: The experiment involves a redox reaction between potassium manganate (VII) and ammonium Potassium manganate (VII) is used in the experiment as it reacts completely and it is its …

In this plan I shall demonstrate that sulphuric acid is dibasic. In order to do this affectively I will plan experiment using scientific techniques. The experiment will involve titration. I will then validate these experiments using calculations and appropriate chemistry knowledge. The reactants I have selected that will neutralise sulphuric …

To find the molarity of the unknown acid, first we had to create a standard solution, the solution we created was Sodium Hydroxide (NaOH). We wanted a 0.1 molar solution of sodium hydroxide so to get this we had to dissolve 4g of NaOH into 1000cm³ of water, but we …

Aim: To make an accurate Sodium Hydroxide solution ready for titration. Apparatus: Sodium Hydroxide pellets, Pipette, Distilled water, Volumetric Flask, Spatula, Weighing scale, Goggles. NaOH: 23+16+1=40g. 40g NaOH in 1 litre (1000ml) 10g in 250ml 1g in 250ml 0.1 molar Method: Firstly we weighed out exactly 1 gram of the …

I aim to investigate how the concentration of potassium bromide affect the rate of reaction when added to a solution made up of potassium bromate(V), sulphuric acid and phenol. The general equation for the reaction between bromide and bromate ions in acidic aqueous solution is: (1) BrO3-(aq) + 5Br -(aq) …