If 852 G Each of Zinc,potassium Dichromate,and Sulfuric Acid Are Reacted

question 51

Multiple Choice

If 8.52 g each of zinc,potassium dichromate,and sulfuric acid are reacted by the reaction:
4 Zn + K₂Cr₂O₇ + 7 H₂SO₄→ 4 ZnSO₄ + 2 CrSO₄ +K₂SO₄ + 7 H₂O
How many grams of zinc will be left unreacted?

• A)0.94 g
• B)3.65 g
• C)5.27 g
• D)1.89 g
• E)3.25 g

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Definitions:

Base

A substance capable of accepting protons according to the Bronsted-Lowry theory or donating electron pairs in Lewis theory; it counteracts acids.

Amines

Organic compounds composed of nitrogen atoms bonded to alkyl or aryl groups, behaving as bases.

Cyclohexylamine

A primary amine derived from cyclohexane, noted for its use in the production of pharmaceuticals and corrosion inhibitors.

NMR Spectroscopy

A technique that uses nuclear magnetic resonance to determine the molecular structure of organic compounds by observing the interaction of atomic nuclei with radio waves.