This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
ScanSolve AI Answer
Step 1: Address question 12(a). When a few drops of aqueous ammonia are added to copper (II) sulphate solution, a pale blue precipitate of copper (II) hydroxide is formed. When excess aqueous ammonia is added, the pale blue precipitate dissolves to form a deep blue solution of tetraamminecopper(II) complex. Step 2: Address question 12(b). The substance formed when a few drops of aqueous ammonia are added is copper (II) hydroxide. Its formula is Cu(OH)_2. Step 3: Address question 13(a). Nitric (V) acid is a highly corrosive and reactive acid. Glass is used for the apparatus because it is unreactive to most chemicals, including strong acids like nitric acid, preventing corrosion and contamination. a) When a few drops of aqueous ammonia are added, a pale blue precipitate forms. When excess aqueous ammonia is added, the pale blue precipitate dissolves to form a deep blue solution. b) The formula of the substance formed when few drops are added is Cu(OH)_2. a) All apparatus used during the preparation of nitric(V) acid are made of glass because glass is unreactive to most chemicals, including concentrated nitric acid, preventing corrosion. Send me the next one 📸