Question 1
Identify which equation correctly represents the self-ionisation of pure water.
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Chemistry · Unit 3 · Chemical equilibrium systems · Chemical equilibrium
Identify that water is a weak electrolyte and the self-ionisation of water is represented by Kw. (Formula: Kw = [H+][OH–])
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Question 2
A student measures the electrical conductivity of pure water at 25 °C and finds that it conducts a very small current. Identify the reason why pure water is classified as a weak electrolyte and write the balanced chemical equation that represents the self-ionisation of water.
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Question 3
Determine which statement correctly describes the ionic product constant Kw for water at 298 K.
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