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(1) Explain why it would be dangerous to pour 100 mL of a 0.10 M Cr(NO3)3...

(1) Explain why it would be dangerous to pour 100 mL of a 0.10 M Cr(NO3)3 solution into the drain.

(2) sugest a way that Cr3+ ion could be removed from the sloution as a solid, so that the solution could be disposed of and the solid sent to a chemical landfill.

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Answer #1

1. Cr(NO3)3 is soluble and will release the very toxic Cr3+ ions into the environment.

2. Mix with a solution containing an ion (CO3-2, PO4-3, S-2, OH- would work)that when bonded with Cr produces a solid that could then me removed and disposed of effectivly. Cooling the solution will also decrease the solubility and create even further removal of Cr3+

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