Spisat Prakticheskuiu Rabotu 2 Po Khimii 9 Klass Gabrielian Apr 2026

Cu(OH)2+2HCl→CuCl2+2H2Ocap C u open paren cap O cap H close paren sub 2 plus 2 cap H cap C l right arrow cap C u cap C l sub 2 plus 2 cap H sub 2 cap O Ionic:

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:

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 spisat prakticheskuiu rabotu 2 po khimii 9 klass gabrielian

The blue precipitate dissolves, forming a clear blue solution.

CuSO4+2NaOH→Cu(OH)2↓+Na2SO4cap C u cap S cap O sub 4 plus 2 cap N a cap O cap H right arrow cap C u open paren cap O cap H close paren sub 2 down arrow positive cap N a sub 2 cap S cap O sub 4 Ionic: Cu(OH)2+2HCl→CuCl2+2H2Ocap C u open paren cap O cap

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

Ba2++SO42−→BaSO4↓cap B a raised to the 2 plus power plus cap S cap O sub 4 raised to the 2 minus power right arrow cap B a cap S cap O sub 4 down arrow Identification of Ions in Solution The blue precipitate

Na2CO3+2HCl→2NaCl+H2O+CO2↑cap N a sub 2 cap C cap O sub 3 plus 2 cap H cap C l right arrow 2 cap N a cap C l plus cap H sub 2 cap O plus cap C cap O sub 2 up arrow Ionic: