Mastering Oxidation and Reduction

<p>The substance that loses electrons</p> Signup and view all the answers

<p>Aluminum (Al)</p> Signup and view all the answers

<p>Nitrogen (N)</p> Signup and view all the answers

<p>+5</p> Signup and view all the answers

<p>The loss of electrons from atoms of a substance</p> Signup and view all the answers

<p>-1</p> Signup and view all the answers

<p>2I⁻ (aq) + Pb²⁺ (aq) → PbI₂ (s)</p> Signup and view all the answers

<p>Oxidation is defined as the loss of electrons from atoms of a substance.</p> Signup and view all the answers

<p>Reduction is defined as the gain of electrons by the atoms of a substance.</p> Signup and view all the answers

<p>The oxidation number represents the number of electrons lost or gained by the atom when it forms an ion.</p> Signup and view all the answers

<p>Oxidation is defined as the loss of electrons from atoms of a substance, while reduction is defined as the gain of electrons by the atoms of a substance.</p> Signup and view all the answers

<p>Oxidation numbers are tools that scientists use to keep track of the movement of electrons in a redox reaction. The oxidation number of an atom in an ionic compound is the number of electrons lost or gained by the atom when it forms an ion.</p> Signup and view all the answers

<p>2I⁻ (aq) + Pb²⁺ (aq) → PbI₂ (s)</p> Signup and view all the answers

<p>Oxidation is the loss of electrons from an atom or molecule, resulting in an increase in oxidation number. Reduction is the gain of electrons by an atom or molecule, resulting in a decrease in oxidation number.</p> Signup and view all the answers

<p>An oxidizing agent is a substance that accepts electrons from another substance, causing it to be oxidized. It is itself reduced in the reaction.</p> Signup and view all the answers

<p>Elements with high electronegativity are strong oxidizing agents. They have a high tendency to accept electrons from other substances, making them effective at causing oxidation in a redox reaction.</p> Signup and view all the answers

<p>The oxidation number of an element can be determined using a set of rules. These rules help assign a charge or oxidation number to each atom in a compound or ion, based on its electron gain or loss.</p> Signup and view all the answers

<p>Oxidation = The loss of electrons from atoms of a substance Reduction = The gain of electrons by the atoms of a substance Oxidizing Agent = A substance that oxidizes another substance by accepting its electrons Oxidation Number = The number of electrons lost or gained by an atom in an ion</p> Signup and view all the answers

<p>Na → Na+ + e– = Oxidation Cl2 + 2e– → 2Cl– = Reduction 2I⁻ (aq) + Pb²⁺ (aq) → PbI₂ (s) = Net Ionic Equation 2KI(aq) + Pb(NO₃)₂ (aq) → PbI₂ (s) + 2KNO₃ (aq) = Complete Ionic Equation</p> Signup and view all the answers

<p>Oxidizing Agent = A substance that causes oxidation by accepting electrons Reduction = The gain of electrons by an atom or ion Oxidation Number = The charge of an atom or ion after it has gained or lost electrons Spectator Ion = An ion that does not participate in a reaction</p> Signup and view all the answers

<p>Oxidation = The process in which an atom or ion loses electrons Reduction = The process in which an atom or ion gains electrons Oxidizing agent = The substance that oxidizes another substance by accepting its electrons Oxidation number = The number of electrons lost or gained by an atom in an ionic compound</p> Signup and view all the answers

<p>Oxidation = The process in which an atom or ion loses electrons Reduction = The process in which an atom or ion gains electrons Reducing agent = The substance that causes the reduction of another substance by losing its electrons Oxidation number = The number of electrons lost or gained by an atom in an ionic compound</p> Signup and view all the answers

<p>Oxidation = The process in which an atom or ion loses electrons Reduction = The process in which an atom or ion gains electrons Oxidizing agent = The substance that causes the oxidation of another substance by accepting its electrons Oxidation number = The number of electrons lost or gained by an atom in an ionic compound</p> Signup and view all the answers

<p>Oxidizing Agent = The substance that oxidizes another substance by accepting its electrons Reducing Agent = The substance that reduces another substance by losing its electrons Oxidation = A reactant loses an electron. Reducing agent is oxidized. Oxidation number increases Reduction = Other reactant gains an electron. Oxidizing agent X loses an electron. X is the reducing agent and becomes oxidized. The oxidation number of X increases</p> Signup and view all the answers

<p>Chlorine (Cl) in KClO3 = +5 Sulfur (S) in SO32– = +4 Oxygen (O) in KClO3 = -2 Potassium (K) in KClO3 = +1</p> Signup and view all the answers

<p>ANALYZE THE PROBLEM = You are given the reactants and products in the reaction. You must determine the electron transfers that occur SOLVE FOR THE UNKNOWN = Assign the known oxidation numbers to their elements, set the sum of all oxidation numbers to zero or to the ion charge, and solve for the unknown oxidation number EVALUATE THE ANSWER = In this process, aluminum atoms lost electrons and were oxidized, whereas iron ions gained electrons and were reduced KNOWN UNKNOWN = Use the rules for determining oxidation numbers to find the oxidation number of each element in a given compound or ion</p> Signup and view all the answers

<p>Oxidation = The process in which a reactant loses an electron. The reducing agent is oxidized and the oxidation number of the element increases Reduction = The process in which another reactant gains an electron. The oxidizing agent loses an electron and its oxidation number decreases Oxidizing Agent = The substance that is reduced in a redox reaction. It causes the oxidation of another substance by accepting its electrons Reducing Agent = The substance that is oxidized in a redox reaction. It causes the reduction of another substance by losing its electrons</p> Signup and view all the answers