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Acids, Bases and pH - Science Skool!
2 (c) At 298K, the value of the acid dissociation constant, K a, for ethanoic acid in aqueous solution is 1.74 × 10–5 mol dm–3 2 (c) (i) Write an expression for the acid dissociation constant, K a, for ethanoic acid..... (1 mark) 2 (c) (ii) Calculate the pH of 0.410mol dm–3 ethanoic acid at this temperature.
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AS Chemistry Paper 2 2018 Model Answer - Science Skool!
www.scienceskool.co.ukA mixture Of carbon monoxide and hydrogen was allowed to reach equilibrium in a container of volume 250 cm3 at temperature T. At equilibrium, the mixture contained 0.340 mol of carbon monoxide, 0.190 mol of hydrogen and 0.0610 mol of methanol. Calculate the value of the equilibrium constant (Kc) for this reaction at temperature T. Do not v.mte
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www.scienceskool.co.ukThe Maxwell—Boltzmann distribution of molecular energies in a sample of gas at a fixed temperature is shown. Which letter represents the mean energy of the molecules? [1 mark] — af Ethanol can be made from glucose by fermentation. C6H1206 2C2H50H + 2C02 In an experiment, 268 g of ethanol (Mr= 46.0) were made from 1.44 kg of glucose = 180.0).
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