Testin for an Ion Essay

355 WordsOct 23, 20142 Pages
TEST FOR CHLORIDE IONS Add approx. 2cm depth of sample solution to be tested to a test tube Add approx. 1cm depth of Dilute Nitric Acid Add a few drops Silver Nitrate If a white precipitate appears split the precipitate into two test tubes Add to one half of the precipitate excess Dilute Ammonia Solution To the other half of the precipitate add Concentrated Ammonia solution If both the precipitates dissolve this is a positive for Chloride ions TEST FOR BROMIDE IONS Add approx. 2cm depth of sample solution to be tested to a test tube Add approx. 1cm depth of Dilute Nitric Acid Add a few drops Silver Nitrate If a cream precipitate appears split the precipitate into two test tubes Add to one half of the precipitate excess Dilute Ammonia Solution To the other half of the precipitate add Concentrated Ammonia solution If the precipitates in the concentrated ammonia solution only dissolves this is a positive for Bromide ions TEST FOR IODIDE IONS Add approx. 2cm depth of sample solution to be tested to a test tube Add approx. 1cm depth of Dilute Nitric Acid Add a few drops Silver Nitrate If a yellow precipitate appears split the precipitate into two test tubes Add to one half of the precipitate excess Dilute Ammonia Solution To the other half of the precipitate add Concentrated Ammonia solution If neither of the precipitates dissolves this is a positive for Iodide ions TEST FOR SULPATE IONS Add approx. 2cm depth of the sample solution to be tested to a test tube Add approx. 2cm depth of dilute hydrochloric acid Add a few drops of barium chloride solution If a white precipitates appears this is a positive for Sulphate ions TEST FOR CARBONATE IONS Add approx. 1cm depth of the sample to be tested to a test tube Add approximately 2cm3 of Hydrochloric acid Quickly attach a delivery tube to the test tube other the end of the delivery tube is

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