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Question 746:

S<sub style='font-size: smaller;'>2</sub>O<sup style='font-size: smaller;'>2-</sup><sub style='font-size: smaller;'>3</sub> + I<sub style='font-size: smaller;'>2</sub> â†’ S<sub style='font-size: smaller;'>2</sub>O<sub style='font-size: smaller;'>6</sub><sup style='font-size: smaller;'>2-</sup> + 2I<sup style='font-size: smaller;'>-</sup>. In reaction above, the oxidizing agent is?

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A S<sub style='font-size: smaller;'>2</sub>O<sub style='font-size: smaller;'>3</sub><sup style='font-size: smaller;'>2-</sup>
B I<sub style='font-size: smaller;'>2</sub>
C S<sub style='font-size: smaller;'>4</sub>O<sub style='font-size: smaller;'>6</sub><sup style='font-size: smaller;'>2-</sup>
D I<sup style='font-size: smaller;'>-</sup>

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Question 747:

MnO<sub style='font-size: smaller;'>2</sub> + 2CI<sup style='font-size: smaller;'>-</sup> + 4H<sup style='font-size: smaller;'>+</sup> â†’ MnO<sup style='font-size: smaller;'>2+</sup> + CI<sub style='font-size: smaller;'>2</sub> + 2H<sub style='font-size: smaller;'>2</sub>O. <br/>The changes is oxidation numbers when the manganese, chloride and hydrogen ions react according to the above equation are respectively?

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A 2, 2, 4
B -1, -2, 4
C -2, 1, 0
D 2, 4, 0

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Question 748:

In which of the following is the entropy change positive?

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A H<sub style='font-size: smaller;'>2</sub>O<sub style='font-size: smaller;'>(I)</sub> â†’ H<sub style='font-size: smaller;'>2</sub>O<sub style='font-size: smaller;'>(g)</sub>
B Cu<sup style='font-size: smaller;'>2+</sup><sub style='font-size: smaller;'>(aq) + Fe_{(s)</sub> → Fe<sup style='font-size: smaller;'>(2+)</sup> + Cu<sub style='font-size: smaller;'>(s)</sub>}
C N<sub style='font-size: smaller;'>2</sub><sub style='font-size: smaller;'>(g)</sub> + 3H<sub style='font-size: smaller;'>2</sub><sub style='font-size: smaller;'>(g)</sub> â†’ 2NH<sub style='font-size: smaller;'>3</sub><sub style='font-size: smaller;'>(g)</sub>
D 2HCI<sub style='font-size: smaller;'>(s)</sub> â†’ H<sub style='font-size: smaller;'>2</sub><sub style='font-size: smaller;'>(g)</sub> + CI<sub style='font-size: smaller;'>2</sub><sub style='font-size: smaller;'>(g)</sub>

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Question 749:

In what way is equilibrium constant for the forward reaction related to that of the reversed reaction?

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A The additional of the two is expected to be one
B The product of the two is expected to be one
C The two equilibrium constants are identical
D The product of the two is always greater than one

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Question 750:

Which of the following equilibria shows little or no net reaction when the volume of the system is decreased?

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A H<sub style='font-size: smaller;'>2</sub><sub style='font-size: smaller;'>(g)</sub> + I<sub style='font-size: smaller;'>2</sub><sub style='font-size: smaller;'>(g)</sub> â‰ˆ 2HI<sub style='font-size: smaller;'>(g)</sub>
B 2NO<sub style='font-size: smaller;'>2</sub><sup style='font-size: smaller;'>(g)</sup> ≈ N<sub style='font-size: smaller;'>2</sub>O<sub style='font-size: smaller;'>4</sub><sub style='font-size: smaller;'>(g)</sub>O<sub style='font-size: smaller;'>4</sub><sub style='font-size: smaller;'>(g)</sub>N<sub style='font-size: smaller;'>2</sub>O<sub style='font-size: smaller;'>4</sub><sub style='font-size: smaller;'>(g)</sub>
C PCI<sub style='font-size: smaller;'>5</sub><sub style='font-size: smaller;'>(g)</sub> â‰ˆ PCI<sub style='font-size: smaller;'>3</sub><sub style='font-size: smaller;'>(g)</sub> + CI<sub style='font-size: smaller;'>2</sub><sub style='font-size: smaller;'>(g)</sub>
D ZnO<sub style='font-size: smaller;'>(s)</sub> + CO<sub style='font-size: smaller;'>2</sub><sub style='font-size: smaller;'>(g)</sub> â‰ˆ ZnCO<sub style='font-size: smaller;'>3</sub><sub style='font-size: smaller;'>(g)</sub>

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