Inorganic Chemistry Practicals (A Level only) (AQA A-Level Chemistry): Flashcards

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Required Practical 11
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Aim of Required Practical 11

Identify transition metal ions in aqueous solution

Conc. of NaOH solution used

1.01.0 mol dm−3^{-3}

Conc. of Na2_{2}CO3_{3} solution used

1.01.0 mol dm−3^{-3}

Conc. of AgNO3_{3} solution used

0.050.05 mol dm−3^{-3}

No. of drops of test solution added

10 drops

Time to stand test tubes in hot water (Test 1b)

Approximately 10 minutes

Type of water used in Test 1b beaker

Freshly boiled water

How many tests are needed to identify the ions

All three tests

Why must test tubes & pipettes be thoroughly clean

Tests are highly sensitive; cross-contamination could affect results

What to use for clearer observation of colour changes

White background (e.g., sheet of paper)

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