The direction of reversible support a piece of damp reactions can be changed by pH paper half way up changing the conditions. the tube and observe the colour change. Examples include the effect Interpret the results of changing the temperature (blue then red) in terms on the decomposition of of the thermal ammonium chloride and of decomposition of the hydrated copper(II) sulfate. ammonium chloride into ammonia and hydrogen chloride. 4.7.4.9 When a reversible reaction Recall that dynamic 0.5 Explain the term equilibrium Research examples of Video clip occurs in apparatus which equilibrium occurs and give suitable examples of equilibrium reactions in YouTube: prevents the escape of when the rates of when it can occur. industry. reactants and products, forward and reverse equilibrium is reached when reactions are equal. the forward and reverse reactions occur at exactly the same rate. 4.7.4.10 (HT only) Make qualitative 1 Describe Le Chatelier’s Video clips: predictions about the principle. The relative amounts of all YouTube: effect of changes on the reactants and products at systems at equilibrium
The direction of reversible reactions can be changed by changing the conditions. Examples include the effect of changing the temperature on the decomposition of ammonium chloride and of hydrated copper(II) sulfate. support a piece of damp pH paper half way up the tube and observe the colour change. Interpret the results (blue then red) in terms of the thermal decomposition of the ammonium chloride into ammonia and hydrogen chloride. 4.7.4.9 When a reversible reaction occurs in apparatus which prevents the escape of reactants and products, equilibrium is reached when the forward and reverse reactions occur at exactly the same rate. Recall that dynamic equilibrium occurs when the rates of forward and reverse reactions are equal. 0.5 Explain the term equilibrium and give suitable examples of when it can occur. Research examples of equilibrium reactions in industry. Video clip YouTube: 4.7.4.10 (HT only) The relative amounts of all the reactants and products at Make qualitative predictions about the effect of changes on systems at equilibrium 1 Describe Le Chatelier’s principle. Video clips: YouTube:
AQA-8465-SOW-MAI.DOCX