Chemistry-C8-Identifying Anions (ions) 0.0 / 5 ? ChemistryAnalysing substancesGCSEAQA Created by: tonisha_Created on: 23-02-23 17:33 An anion is the ______ ion and is a _____-_____? negative ion and is a non-metal 1 of 23 What three ions do we test for? carbonate ion halide ions sulfate ions 2 of 23 TEST FOR CARBONATE ION --------------------------------- Firstly add dilute ______ to the sample? acid 3 of 23 The acid will react with the ______ to produce what? carbonate to produce CO2 gas 4 of 23 We will see fizzing or e_______? effervescence 5 of 23 How will we prove we have CO2 gas? bubble it through limewater 6 of 23 What shows a positive test? if limewater goes from colourless to cloudy, 7 of 23 This means we started with the? carbonate ion 8 of 23 TEST FOR HALIDES ------------------------- What three halides do we test for? chloride bromide iodide 9 of 23 Firstly we will add dilute _____ acid to the sample? dilute nitric acid 10 of 23 This removes any ______ or ______ ion (______)? carbonate or sulfate ion (impurities) 11 of 23 This will be followed with a dilute _______ _______ solution? silver nitrate solution 12 of 23 The halide will then produce a? precipitate 13 of 23 Of what? a silver "halide" 14 of 23 Chloride ions will form? silver chloride 15 of 23 With a precipitate colour of? white 16 of 23 Bromide ions form? silver bromide 17 of 23 With a precipitate colour of? cream 18 of 23 Iodide ions will form? silver iodide 19 of 23 With a precipitate colour of? yellow 20 of 23 TEST FOR SULFATE IONS ------------------------------- Firstly add dilute _____ to the sample? This removes any? HCl carbonate or sulfate ion impurities 21 of 23 Then add b______ c______ solution? barium chloride 22 of 23 If sulfate ions are present what will form? white precipitate 23 of 23
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