Galvanic and electrolytic cells, oxidation states, and the Nernst equation tested on the MCAT.
About this set
35 basic cards for MCAT General Chemistry. Set 5 of 9 in MCAT General Chemistry. It opens with "What happens to an atom or ion during oxidation, in terms of electrons?" and "What happens to an atom or ion during reduction, in terms of electrons?". Study it alongside the other MCAT sets below.
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- What happens to an atom or ion during oxidation, in terms of electrons?
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It loses electrons.- What happens to an atom or ion during reduction, in terms of electrons?
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It gains electrons.- What does the mnemonic OIL RIG stand for?
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Oxidation Is Loss, Reduction Is Gain (of electrons).- In a redox reaction, what is the oxidizing agent?
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The substance that is reduced (it gains electrons and causes another species to be oxidized).- In a redox reaction, what is the reducing agent?
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The substance that is oxidized (it loses electrons and causes another species to be reduced).- What is the oxidation number of any atom in its pure elemental form?
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Zero.- What is the oxidation number of a monatomic ion?
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It equals the charge of the ion.- What is the usual oxidation number of oxygen in a compound?
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-2- What is the oxidation number of oxygen in a peroxide such as H2O2?
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-1- What is the usual oxidation number of hydrogen in a compound?
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+1- What is the oxidation number of hydrogen in a metal hydride such as NaH?
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-1- What must the sum of all oxidation numbers equal in a neutral compound?
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Zero.- What must the sum of all oxidation numbers equal in a polyatomic ion?
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The overall charge of the ion.- What is a galvanic (voltaic) cell?
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An electrochemical cell that converts a spontaneous redox reaction into electrical energy.- What is an electrolytic cell?
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An electrochemical cell that uses an external electrical energy source to drive a nonspontaneous redox reaction.
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