7961054
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Flashcards by Annette Mehta, updated more than 1 year ago
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| Question | Answer |
| All acids contain | hydrogen |
| When an acid is dissolved in water it does what? | Releases H+ ions into the solution |
| Strong Acid | - Fully Dissociates - Releases all its H atoms into solution as H+ ions -Example: HCl |
| Weak Acid | - Partially Dissociates - Releases only a small proportion of its available H atoms as H+ ions in solution - Example: CH3COOH |
| Bases - definition | A base neutralises an acid to form a salt |
| Bases - Examples | - Metal Oxide -Metal Hydroxide - Metal Carbonate - Ammonia (NH3) |
| Alkali - Definition | An alkali is a base that dissolves in water releasing hydroxide ions (OH-) into the solution. An example of a base/alkali is sodium hydroxide. |
| Neutralising an acid with a base | H+ ions react with a base to form a salt and neutral water. H+ ions from the acid are replaced by metal or ammonium ions from the base. |
| Acid + Alkali --> | salt + water |
| Ionic Equation for neutralisation | H+ + OH- --> H2O |
| Acid + Metal Oxide --> | Metal Salt + Water |
| Acid + Metal Hydroxide --> | Metal Salt and Water |
| Neutralisation of sulphuric acid with Copper (II) Oxide = | sulphuric acid + Copper (II) Oxide --> Copper sulphate + Water H2SO4 (aq) + CuO (s) --> CuSO4 (aq) + H2O (l) |
| Acid + Metal Carbonate --> | Metal Salt + Water + Carbon Dioxide |
| Neutralisation of Zinc Carbonate with Sulphuric Acid | Zinc Carbonate + Sulphuric Acid --> Zinc Sulphate + Water + Carbon Dioxide ZnCO3 (s) + H2SO4 (aq) --> ZnSO4 (aq) + H2O (l) + CO2 (g) |
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