Chromium in Its +VI Oxidation State Is Considered a Hazardous

question 74

Multiple Choice

Chromium in its +VI oxidation state is considered a hazardous, carcinogenic species, destruction of which may be accomplished by the process symbolized as: 4 Zn + K₂Cr₂O₇ + 7 H₂SO₄ → 4 ZnSO₄ + 2 CrSO₄ + K₂SO₄ + 7 H₂O
If 1.0 mol of each reactant is mixed, what is the limiting reagent, and what is the theoretical yield of chromium(II) sulfate?

• A) Zn, 0.50 mol
• B) K₂Cr₂O₇, 2.0 mol
• C) H₂SO₄, 0.29 mol
• D) H₂, 1.0 mol
• E) no limiting reagent, 1.0 mol

Understand the major ways to revise a document.

Recognize the importance and methods of involving a network of associates in the writing process.

Identify key questions to determine the document's purpose.

Understand the benefits and limitations of using templates in document preparation.

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