"A blue precipitate formed..." or "The solution turned violet...".

Since you're looking for a "GDZ" (готовое домашнее задание) style draft for a based on the Gabrielyan textbook , I’ve put together a professional template you can use. This follows the standard Russian academic structure required for lab reports. Laboratory Work No. [Number]

Describe what you saw (color change, gas bubbles, precipitation, or heat). Write the chemical formula:

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