All Reactions and synthesis articles – Page 2

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Some reactions of hydrogen sulfide

Observe the reactions of hydrogen sulfide with lead nitrate, silver nitrate and potassium manganate (VII)
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Some reactions of ammonia

Observe the reactions of ammonia with indicator solution, copper (II) sulphate solution and Nessler’s reagent
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The chemistry of thiosulphate ions

Find out about some interesting chemical reactions of sodium thiosulphate
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Some reactions of nitrogen dioxide

Discover some reactions of nitrogen dioxide
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Mass changes in chemical reactions

Perform two chemical reactions to see whether any mass changes occur
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The oxidation of cyclohexanol by nitric acid

Perform a ring opening oxidation using nitric acid to produce the dicarboxylic acid, 1,6-hexanedioic acid (adipic acid) – and then use the solid crystals that form to determine a melting point
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Chromium, molybdenum and tungsten

Demonstrate aspects of colour, precipitate formation, changes in oxidation state and equilibria for transition elements
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Brady's test for aldehydes and ketones

Explore the identification of aldehydes and ketones with 2,4-dinitrophenylhydrazine (Brady’s reagent)
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The chemical properties of hydroxybenzene

Observe and interpret some of the chemical reactions of hydroxybenzene (phenol) inside a plastic petri dish
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Preparing and testing of ethyne (acetylene)

Generate ethyne gas inside a plastic petri dish with calcium carbide and test its properties using a solution of potassium manganate(VII)
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Observing chemical changes

Experiment with microscale displacement, redox and precipitation reactions between various salts including potassium managanate, barium nitrate and ammonium vanadate. Observe and identify the chemical changes that take place in this visually engaging practical
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Redox chemistry with dichromate ions

Observe the colour changes that occur with the reduction of dichromate ions by hydrogen peroxide
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The reaction of metals with acids

Explore reactivity series with various metals as they react with acids
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Unsaturation test with potassium manganate(VII)

Use a solution of potassium manganate(VII) in propanone to detect whether an organic compound is unsaturated
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Testing for unsaturation with bromine

Use reverse disproportionation to produce a source of bromine – which you can later use to test for unsaturated hydrocarbons
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Oxygen and methylene blue

Test for oxygen gas produced from the reaction between hydrogen peroxide and potassium manganate (VII) using methylene blue solution
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The microscale synthesis of aspirin

Carry out a microscale esterification reaction between 2-hydroxybenzoic acid (salicylic acid) and ethanoic anhydride using phosphoric acid as a catalyst to produce aspirin on a microscale
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Energy changes in neutralisation

Study energy changes in two chemical reactions by performing the experiment on temperature strips
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Formation of TCP (2,4,6-trichlorohydroxybenzene)

Prepare a distinctive-smelling sample of TCP by reacting hydroxybenzene (phenol) with chlorine gas
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Some reactions of carbon dioxide

Create carbon dioxide from marble chips and acid, then test for its reaction with barium hydroxide by observing the carbonate precipitate