Equilibria (Kw/ka) a) The pH of pure water at 100°C is 6.145. Calculate the value of the Kw of pure water at 100°C (2 ma

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Equilibria (Kw/ka) a) The pH of pure water at 100°C is 6.145. Calculate the value of the Kw of pure water at 100°C (2 ma

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Equilibria Kw Ka A The Ph Of Pure Water At 100 C Is 6 145 Calculate The Value Of The Kw Of Pure Water At 100 C 2 Ma 1
Equilibria Kw Ka A The Ph Of Pure Water At 100 C Is 6 145 Calculate The Value Of The Kw Of Pure Water At 100 C 2 Ma 1 (32.75 KiB) Viewed 20 times
Equilibria (Kw/ka) a) The pH of pure water at 100°C is 6.145. Calculate the value of the Kw of pure water at 100°C (2 marks) b) Hydrocyanic acid (HCN) is a weak acid. i. Write a balanced chemical equation for the partial dissociation of hydrocyanic acid (1 mark) ii. Write the Ka expression for hydrocyanic acid. (1 mark) iii. Calculate the pH at 298 K of a 0.250 mol dm-3 solution of hydrocyanic acid where the Ka value is 3.98 x 10-10 mol dm-3. Give your answer to 2 decimal places. (4 marks)
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