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How Many Electrons Are Transferred in the Following Reaction? (The

Question 124
Multiple Choice

How many electrons are transferred in the following reaction? (The reaction is unbalanced.) Ni2+(aq)+ Na(s)→ Ni(s)+ Na+(aq) A) 1 B) 2 C) 3 D) 4 E) 6

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Q 125
How many electrons are transferred in the following reaction? (The reaction is unbalanced.) Br2(s)+ Fe(s)→ Fe3+(aq)+ Br⁻(aq) A) 1 B) 2 C) 6 D) 0 E) 3
Q 126
Which of the following reactions would be the most spontaneous at 298 K? A) A + 2 B → C; E°cell = +0.98 V B) A + B → 2 C; E°cell = -0.040 V C) A + B → 3 C; E°cell = +0.15 V D) A + B → C; E°cell = +1.22 V E) More information is needed to determine.
Q 127
The gas OF2 can be produced from the electrolysis of an aqueous solution of KF,as shown in the equation below. OF2(g)+ 2 H+(aq)+ 4 e- → H2O(l)+ 2 F-(aq)E° = +2.15 V Using the given standard reduction potential,calculate the amount of OF2 that is produced,and the electrode at which the OF2 is produced,upon the passage of 0.480 faradays through an aqueous KF solution. A) 6.48 g of OF2 at the anode B) 26.0 g of OF2 at the anode C) 6.48 g of OF2 at the cathode D) 26.0 g of OF2 at the cathode
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