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Chemical Analysis (Pure Substances and Mixtures (Melting point and boiling…
Chemical Analysis
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Tests for Negative Ions
Halides can be identified by adding nitric acid and the silver nitrate solution. This produces a silver halide
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Sulfates can be identified by adding nitric acid, then barium chloride solution. This produces a white precipitate of barium sulfate
Carbonates can be identified by adding dilute acid, which produces carbon dioxide gas
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Tests for Positive Ions
Sodium hydroxide solution can be used to identify metal ions that form insoluble hydroxides in precipitation reactions
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Instrumental Analysis
This method will tell us which metal ions are present from their characteristic line spectra, and also the concentration of the metal ions in a solution
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Modern instrumental techniques provide fast, accurate and sensitive ways of analyzing chemical substances