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Consider the Aqueous Phase Reaction Between the Dichromate Anion and Iron

Question 17

Multiple Choice

Consider the aqueous phase reaction between the dichromate anion and iron (II) cations:14 H3O+(aq) + Cr2O72- + 6Fe2+(aq) \rarr 2Cr3+(aq) + 21H2OWhat is the rate of increase of Cr3+ concentration expressed in terms of changing H3O+ concentration?


A)  Consider the aqueous phase reaction between the dichromate anion and iron (II)  cations:14 H<sub>3</sub>O<sup>+</sup>(aq)  + Cr<sub>2</sub>O<sub>7</sub><sup>2- </sup>+ 6Fe<sup>2+</sup>(aq)    \rarr   2Cr<sup>3+</sup>(aq)  + 21H<sub>2</sub>OWhat is the rate of increase of Cr<sup>3+</sup> concentration expressed in terms of changing H<sub>3</sub>O<sup>+ </sup>concentration? A)    B)    C)    D)
B)  Consider the aqueous phase reaction between the dichromate anion and iron (II)  cations:14 H<sub>3</sub>O<sup>+</sup>(aq)  + Cr<sub>2</sub>O<sub>7</sub><sup>2- </sup>+ 6Fe<sup>2+</sup>(aq)    \rarr   2Cr<sup>3+</sup>(aq)  + 21H<sub>2</sub>OWhat is the rate of increase of Cr<sup>3+</sup> concentration expressed in terms of changing H<sub>3</sub>O<sup>+ </sup>concentration? A)    B)    C)    D)
C)  Consider the aqueous phase reaction between the dichromate anion and iron (II)  cations:14 H<sub>3</sub>O<sup>+</sup>(aq)  + Cr<sub>2</sub>O<sub>7</sub><sup>2- </sup>+ 6Fe<sup>2+</sup>(aq)    \rarr   2Cr<sup>3+</sup>(aq)  + 21H<sub>2</sub>OWhat is the rate of increase of Cr<sup>3+</sup> concentration expressed in terms of changing H<sub>3</sub>O<sup>+ </sup>concentration? A)    B)    C)    D)
D)  Consider the aqueous phase reaction between the dichromate anion and iron (II)  cations:14 H<sub>3</sub>O<sup>+</sup>(aq)  + Cr<sub>2</sub>O<sub>7</sub><sup>2- </sup>+ 6Fe<sup>2+</sup>(aq)    \rarr   2Cr<sup>3+</sup>(aq)  + 21H<sub>2</sub>OWhat is the rate of increase of Cr<sup>3+</sup> concentration expressed in terms of changing H<sub>3</sub>O<sup>+ </sup>concentration? A)    B)    C)    D)

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