Science task 115: A New Zealand Scholarship candidate must demonstrate synthesis, independence and insight rather than routine recall. A weak acid has pKa 4.2 at pH 5.2. What is [A⁻]/[HA]?

Science task 115: A New Zealand Scholarship candidate must demonstrate synthesis, independence and insight rather than routine recall. A weak acid has pKa 4.2 at pH 5.2. What is [A⁻]/[HA]?

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