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Exam (elaborations)

Chemistry paper 2 Questions and Answers 2024

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What colour flame does sodium produce? - Ans .yellow What colour flame does lithium produce? - Ans .crimson What colour flame does potassium produce? - Ans .lilac What colour flame does calcium produced? - Ans .orange-red What colour flame does copper produce - Ans .green Some fireworks contain a mixture of metal ions. Why is it difficult to identify the metal ions from the colour of the flame? - Ans .colours are masked what name is given to a useful product such as methylated spirit - Ans .formulation Suggest why pyridine and methyl violet are added to ethanol to make methylated spirit. - Ans .deter consumption Suggest one use of methylated spirit. - Ans .antiseptic describe how ethanol is produced from sugar solution Give the name of this process - Ans .fermentation add yeast anaerobic conditions

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Uploaded on
June 20, 2024
Number of pages
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Written in
2023/2024
Type
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Questions & answers

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