A student tests two substances: solution $$\(\mathbf{E}\)$$ and solid $$\(\mathbf{F}\)$$. Tests on solution E Solution $$\(\mathbf{E}\)$$ is aqueous chromium(III) bromide. Solution $$\(\mathbf{E}\)$$ is divided into two portions. Record the expected observations. To the first portion of solution $$\(\mathbf{E}\)$$, the student adds aqueous sodium hydroxide dropwise and then in excess. observations adding dropwise ............................................................................................... ................................................................................................................................................ . observation in excess ............................................................................................................ ................................................................................................................................................ .

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