Science task 195: A New Zealand Level 3 learner evaluates evidence and justifies a conclusion in a complex context. A weak acid has pKa 5.0 at pH 6.0. What is [A⁻]/[HA]?

Science task 195: A New Zealand Level 3 learner evaluates evidence and justifies a conclusion in a complex context. A weak acid has pKa 5.0 at pH 6.0. What is [A⁻]/[HA]?

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