Suspicions are raised that a sample of soft drink has become accidentally contaminated with a small amount of lead in the form of Pb²⁺(aq). The most suitable analytical method of testing for the presence of Pb²⁺ in the sample is A. gas chromatography. B. paper chromatography. C. UV-visible spectroscopy. D. atomic absorption spectroscopy.

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Suspicions are raised that a sample of soft drink has become accidentally contaminated with a small amount of lead in the form of Pb²⁺(aq) - VCE - SSCE Chemistry - Question 1 - 2004 - Paper 1

Question 1

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Suspicions are raised that a sample of soft drink has become accidentally contaminated with a small amount of lead in the form of Pb²⁺(aq). The most suitable analyt... show full transcript

Worked Solution & Example Answer:Suspicions are raised that a sample of soft drink has become accidentally contaminated with a small amount of lead in the form of Pb²⁺(aq) - VCE - SSCE Chemistry - Question 1 - 2004 - Paper 1

Step 1

Identify the most suitable analytical method

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Answer

To determine the presence of Pb²⁺ in soft drink, the most suitable method is atomic absorption spectroscopy (AAS). This technique is highly effective for detecting and quantifying metal ions in various samples due to its sensitivity and accuracy. AAS works by measuring the absorption of light by vaporized atoms, allowing for precise quantification of lead ions.

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