(a)
Interpretation:
The reaction
Concept Introduction:
Oxidation:
Loss of electrons from an atom ion or molecule during a
Example
Here
Oxidation number:
It is the charge of an atom, provided if the compound is composed of ions. On oxidation the oxidation number will increase and on reduction the oxidation number will decrease. It can be also called as degree of oxidation.
Example:
`
Oxidation number of
Oxidation number of
Oxidation number of
Oxidation number of
Here we can see that the oxidation number of copper is decreased and the oxidation number of magnesium is increased.
(b)
Interpretation:
The reaction
Concept Introduction:
Oxidation:
Loss of electrons from an atom ion or molecule during a chemical reaction is known as oxidation. Oxidation state of atom ion or molecule will increase in this process. In simple it is the addition of oxygen. Reduction is gaining of electrons.
Example
Here
Oxidation number:
It is the charge of an atom, provided if the compound is composed of ions. On oxidation the oxidation number will increase and on reduction the oxidation number will decrease. It can be also called as degree of oxidation.
Example:
`
Oxidation number of
Oxidation number of
Oxidation number of
Oxidation number of
Here we can see that the oxidation number of copper is decreased and the oxidation number of magnesium is increased.
(c)
Interpretation:
The reaction
Concept Introduction:
Reduction:
It is the gaining of electrons. Oxidation number will decrease in this. Reduction can be also termed as addition of Hydrogen or removal of Oxygen.
Example:
The oxidation No of Zn is reduced.
(d)
Interpretation:
The reaction
Concept Introduction:
Oxidation:
Loss of electrons from an atom ion or molecule during a chemical reaction is known as oxidation. Oxidation state of atom ion or molecule will increase in this process. In simple it is the addition of oxygen. Reduction is gaining of electrons.
Example
Here
Oxidation number:
It is the charge of an atom, provided if the compound is composed of ions. On oxidation the oxidation number will increase and on reduction the oxidation number will decrease. It can be also called as degree of oxidation.
Example:
`
Oxidation number of
Oxidation number of
Oxidation number of
Oxidation number of
Here we can see that the oxidation number of copper is decreased and the oxidation number of magnesium is increased.
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General, Organic, and Biological Chemistry
- The Toliens test for the presence of reducing sugars (say, in a urine sample) involves treating the sample with silver ions in aqueous ammonia. The result is the formation of a silver mirror within the reaction vessel if a reducing sugar is present. Using glucose, C6H12O6, to illustrate this test, the oxidation-reduction reaction occurring is C6H12O6 (aq) + 2 Ag+(aq) + 2OH(aq) C6H12O7(aq) + 2 Ag(s) + H2O() What has been oxidized, and what has been reduced? What is the oxidizing agent, and what is the reducing agent? Tolien's test. The reaction of silver ions with a sugar such as glucose produces metallic silver. (a) The set-up for the reaction. (b) The silvered test tubearrow_forwardMany oxidationreduction reactions can be balanced by inspection. Try to balance the following reactions by inspection. In each reaction, identify the substance reduced and the substance oxidized. a. Al(s) + HCl(aq) AlCl3(aq) + H2(g) b. CH4(g) + S(s) CS2(l) + H2S(g) c. C3H8(g) + O2(g) CO2(g) + H2O(l) d. Cu(s) + Ag+(aq) Ag(s) + Cu2+(aq)arrow_forwardWhich two of the following reactions are oxidation-reduction reactions? Explain your answer briefly. Classify the remaining reaction. (a) CdC12(aq) + Na2S(aq) CdS(s) + 2 NaCl(aq) (b) 2 Ca(s) + O2(g) 2 CaO(s) (c) 4 Fe(OH)2(s) + 2 H2O() + O2(g) 4 Fe(OH)3(s)arrow_forward
- A novel process for obtaining magnesium from sea water involves several reactions. Write a balanced chemical equation for each step of the process. (a) The first step is the decomposition of solid calcium carbonate from seashells to form solid calcium oxide and gaseous carbon dioxide. (b) The second step is the formation of solid calcium hydroxide as the only product from the reaction of the solid calcium oxide with liquid water. (c) Solid calcium hydroxide is then added to the seawater, reacting with dissolved magnesium chloride to yield solid magnesium hydroxide and aqueous calcium chloride. (d) The solid magnesium hydroxide is added to a hydrochloric acid solution, producing dissolved magnesium chloride and liquid water. (e) Finally, the magnesium chloride is melted and electrolyzed to yield liquid magnesium metal and diatomic chlorine gas.arrow_forwardWhat does it mean for a substance to be oxidized? The term “oxidation” originally came from substances reacting with oxygen gas. Explain why a substance that reacts with oxygen gas will always be oxidized.arrow_forward
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