(b) A 0.5 M ethanoic acid, CH3COOH is 3.5% dissociated when dissolved in water. (i) Write the dissociation equation in w

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B A 0 5 M Ethanoic Acid Ch3cooh Is 3 5 Dissociated When Dissolved In Water I Write The Dissociation Equation In W 1 (53.14 KiB) Viewed 37 times

(b) A 0.5 M ethanoic acid, CH3COOH is 3.5% dissociated when dissolved in water. (i) Write the dissociation equation in water. Then label the Brønsted-Lowry acid and conjugate base. [3 marks] (ii) Is ethanoic acid a strong or a week acid? Explain. [2 marks] Calculate the pH of the acid. [2 marks] (eB (c) Consider the following reaction: A (g) +B (g) -> C(g) +D (g). The initial rate of the reaction was measured at different reactants' concentrations as in table below: Experiment [A] Initial rate M/s 1 0.15 0.01 2.65 2.65 2 3 0.45 0.15 0.01 0.03 71.55 From the data, determine each of the following: (i) The rate law for the reaction. (ii) The rate constant, k for the reaction and state the unit of k. [3 marks] [2 marks]