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What is the oxidation number of Mn in K2MnO4?
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A solution of ethanoic acid in water has a concentration of 3 g/dm^3. Given that the pKa of ethanoic acid is 4.76, calculate the pH of this solution.
What's the difference between an aldehyde and a ketone?
How does pH relate to pKa?
Write an equation for the complete combustion of C9H20
Explain why benzene is colourless whereas azo dyes (such as methyl yellow) are coloured.
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