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 Form 1 Chemistry: Acids, Bases and Indicators Questions and Answers

10g of sodium hydrogen carbonate were dissolved in 200cm3 of water in a boiling tube. Lemon juice was then added dropwise with shaking
until there was no further observable change.
(a) Explain the observation which was made in the boiling tube when the reaction was in progress.
(b) What observation would have been made if the lemon juice had been added to copper turnings in a boiling tube? Give a reason.

 (2m 49s)
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