Edexcel IGCSE Chemistry: Acids, Alkalis and Titrations (Whole Unit)

This PowerPoint Presentation covers most of the requirements for the Acids, Alkalis and Titrations unit for Edexcel IGCSE Chemistry in a clear and coherent manner.

These slides may also be useful for other exam boards, such as AQA, WJEC, CIE, etc., if modified after download.

Specification statements covered include:

• describe the use of the indicators litmus, phenolphthalein and methyl orange to distinguish between acidic and alkaline solutions
• understand how the pH scale, from 0–14, can be used to classify solutions as strongly acidic, weakly acidic, neutral, weakly alkaline or strongly alkaline
• describe the use of universal indicator to measure the approximate pH value of a solution
• define acids as sources of hydrogen ions, H+, and alkalis as sources of hydroxide ions, OH¯
• predict the products of reactions between dilute hydrochloric, nitric and sulfuric acids; and metals, metal oxides and metal carbonates (excluding the reactions between nitric acid and metals)
• understand the general rules for predicting the solubility of salts in water:
  i all common sodium, potassium and ammonium salts are soluble
  ii all nitrates are soluble
  iii common chlorides are soluble, except silver chloride
  iv common sulfates are soluble, except those of barium and calcium
  v common carbonates are insoluble, except those of sodium, potassium and ammonium
• describe experiments to prepare soluble salts from acids
• describe experiments to prepare insoluble salts using precipitation reactions
• describe experiments to carry out acid-alkali titrations.