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GCSE Chemistry Notes: Salt formation when elements combine
e.g. combining a metal with a non-metal element Doc Brown's Chemistry GCSE/IGCSE/O level Science-Chemistry Revision Notes The pH scale of acidity and alkalinity, acids, alkalis, salts and neutralisation 6. Methods of making salts 6d. How to make a salt by direct combination of elements?
Method (c) Preparing an insoluble salt by mixing solutions of two soluble compounds Method (d) Making a salt by directly combining its constituent elements (this page) GCSE/IGCSE Acids & Alkalis revision notes sub–index: Index of all pH, Acids, Alkalis, Salts Notes 1. Examples of everyday acids, alkalis, salts, pH of solution, hazard warning signs : 2. pH scale, indicators, ionic theory of acids–alkali neutralisation : 4. Reactions of acids with metals/oxides/hydroxides/carbonates, neutralisation reactions : 5. Reactions of bases–alkalis like ammonia & sodium hydroxide : 6. Four methods of making salts : 7. Changes in pH in a neutralisation, choice and use of indicators : 8. Important formulae of compounds, salt solubility and water of crystallisation : 10. More on Acid–Base Theory and Weak and Strong Acids
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alkalis salts preparations reactions 6. METHODS of MAKING SALTS - salt preparation procedures 6d. Method (d) Making a salt by direct combination of elements Sometimes it isn't appropriate to prepare a soluble salt by reacting an acid with an insoluble base or alkali, so it may be possible to prepare the salt by directly combining the metal and the non-metal elements. Two such examples are the preparation of anhydrous aluminium chloride and anhydrous iron(III) chloride (anhydrous here means without any water of crystallisation).
Preparation of aluminium chloride AlCl3
Preparation of iron(III) chloride FeCl3
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