Bubbles Will Form on Wires Attached to a 9 V

question 80

Multiple Choice

Bubbles will form on wires attached to a 9 V battery placed in water. Which statements correctly describe what is happening?
(I) The wire attached to the (-) battery electrode becomes the cathode, and water is being reduced there to produce hydrogen gas.
(II) The wire attached to the (+) battery electrode becomes the anode, and water is being oxidized there to produce oxygen gas.
(III) The wire attached to the (-) battery electrode becomes the cathode, and water is being oxidized there to produce oxygen gas.
(IV) The wire attached to the (+) battery electrode becomes the anode, and water is being reduced there to produce hydrogen gas.

• A) I and II
• B) III and IV
• C) I and III
• D) II and IV
• E) I and IV

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