Consider the Half-Reaction Cr³⁺(aq)→ Cr₂O₇²⁻(aq)

question 113

Multiple Choice

Consider the half-reaction Cr³⁺(aq) → Cr₂O₇²⁻(aq) . When the equation is balanced in acid solution, the coefficient for water will be ________, and the number of electrons transferred will be ________.

• A)3, 3
• B)6, 6
• C)7, 6
• D)5, 4
• E)3, 6

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Definitions:

Hydrogen Sulfide Molecule

A chemical compound with the formula H2S, characterized by a foul odor of rotten eggs; it is a poisonous, corrosive, and flammable gas.

Electronegativity Difference

The measure of the tendency of an atom to attract a bonding pair of electrons towards itself, used to predict the nature of chemical bonds.

Polar Covalent

A type of chemical bond where two atoms share a pair of electrons but they do so unequally, leading to a partial positive charge on one atom and a partial negative charge on the other.

Nonpolar Molecules

Molecules that do not have distinct electrical poles, resulting in a uniform distribution of electrical charge and often being hydrophobic or insoluble in water.