Ag++Cl−→AgCl↓cap A g raised to the positive power plus cap C l raised to the negative power right arrow cap A g cap C l down arrow
HCl+AgNO3→AgCl↓+HNO3cap H cap C l plus cap A g cap N cap O sub 3 right arrow cap A g cap C l down arrow positive cap H cap N cap O sub 3 Ionic: spisat prakticheskuiu rabotu 2 po khimii 9 klass gabrielian
Cu2++2OH−→Cu(OH)2↓cap C u raised to the 2 plus power plus 2 cap O cap H raised to the negative power right arrow cap C u open paren cap O cap H close paren sub 2 down arrow Ag++Cl−→AgCl↓cap A g raised to the positive power
This demonstrates the amphoteric or basic properties of metal hydroxides. ml of copper(II) sulfate ( CuSO4cap C u cap S cap O sub 4 ) into a test tube and add NaOHcap N a cap O cap H until a blue precipitate forms. Add dilute hydrochloric acid ( HClcap H cap C l ) to the resulting precipitate. Observations: A blue gelatinous precipitate forms. Observations: A blue gelatinous precipitate forms
To experimentally prove the properties of electrolytes (acids, bases, salts) and conduct qualitative reactions to identify ions in solution. Equipment and Reagents: Test tubes, rack, solutions of: HClcap H cap C l H2SO4cap H sub 2 cap S cap O sub 4 NaOHcap N a cap O cap H Na2CO3cap N a sub 2 cap C cap O sub 3 BaCl2cap B a cap C l sub 2 AgNO3cap A g cap N cap O sub 3 CuSO4cap C u cap S cap O sub 4 FeCl3cap F e cap C l sub 3 , indicators (phenolphthalein, litmus). 1. Identification of Ions in Solution