When a strong base is added to a solution of CuSO4, which is pale blue, a precipitate forms and the solution above the precipitate is colorless. What is the net chemical equation that describes this reaction? Include the phases of all species in the chemical equation. When ammonia is then added, the precipitate dissolves and the solution turns a deep navy blue. What is the net chemical equation that describes this event? Include the phases of all species in the chemical equation. Cu(OH)₂(s) + 4NH₂(aq) → [Cu(NH₂)]²+ (aq) + 2OH¯(aq) Tip: Plus signs (+) can be typed from the keyboard. Reaction arrows can be found in the Tools menu of the answer module. Include phases in the balanced chemical equation. Click on the (aq) button in the tools to select the phase to add. Phases should not be subscripted.

17.) Which combination results in precipitate formation? A. aqueous silver nitrate is added to aqueous ammonium acetateB. aqueous copper(II) sulfate is added to aqueous potassium perchlorateC. aqueous chromium(III) chloride is added to aqueous sodium hydroxideD. aqueous sodium carbonate is added to aqueous hydrobromic acid Explain why.

nitrous acid is estimated, c) What is the pH of the groundwater sample in which dichromate is oxidized to chromic ion by ethanol, which is simultaneously transformed to dissolved carbon dioxide? Modeling studies show that equilibrium is 1.75 x 107 M, dichromate ion is 7.3 x 10-2 M, chromic ion is 8.2 x 10°, ethanol is 6.8 x 102, and carbon dioxide is 6.4 x 10%. dr for the state of South Carolina, describe