A-LEVEL CHEMISTRY Practice Paper 1

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A-LEVEL CHEMISTRY PRACTICE PAPER 1 1

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1 In this question, give all values of pH to 2 decimal places. (a)The ionic product of water has the symbol Kw (i)Write an expression for the ionic product of water. __________________________________________________________ (1) (ii)At 42°C, the value of Kw is 3.46 × 10−14 mol2 dm−6. Calculate the pH of pure water at this temperature (to 2 decimal places). __________________________________________________________ (iii)At 75 °C, a 0.0470 mol dm–3 solution of sodium hydroxide h...

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