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Tag: GCSE
Titration is a common laboratory technique used to determine the concentration of a substance in a solution. In this case, we will be performing a titration with sodium hydroxide (NaOH) and hydrochloric acid (HCl) to determine the concentration of HCl in a given solution.
Iron tablet titration is a common laboratory method used to determine the amount of iron present in a sample, such as an iron supplement tablet. This method involves reacting the iron in the tablet with a solution of potassium permanganate (KMnO4) to produce a purple colour. The endpoint of the titration is reached when the purple colour disappears, indicating that all of the iron in the tablet has reacted with the KMnO4.
Practical advice on how to structure your revision and prepare for your exams: When preparing for exams, it is important to have a structured approach to your revision. Here are some tips to help you prepare
Esterification is a common organic reaction that involves the reaction of a carboxylic acid with an alcohol to form an ester and water. In this experiment, we will be carrying out an esterification reaction to test the equilibrium position at different temperatures using ethanoic acid and ethanol. Safety precautions: • Wear personal protective equipment (PPE) … Continue reading Esterification Reaction and equilibrium constant determination.
The Winkler method is a widely used analytical technique for determining the amount of dissolved oxygen in water samples. Dissolved oxygen is essential for aquatic life and is an important indicator of water quality. The Winkler method involves the addition of reagents to a water sample that react with dissolved oxygen to produce a measurable … Continue reading The Winkler Method – Biological Oxygen Demand BOD
Objective: To observe the reactivity of Group 1 metals (alkali metals) with water. Materials: Group 1 metals (sodium, potassium, lithium) Distilled water Beakers or test tubes Tongs or forceps Safety goggles Laboratory coat or apron Fire blanket and extinguisher (in case of fire) Safety Information: Group 1 metals are highly reactive with water, and can … Continue reading Demonstrating Group 1 Metals with Water
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