(a)
Interpretation:
The half-reaction equation,
Concept introduction:
The reactions in which one compound undergoes oxidation while the other undergoes reduction are termed as redox reactions. The molecule or compound which loses one or more electrons is said to be oxidized. The molecule or compound which gains one or more electrons is said to be reduced.
(b)
Interpretation:
The half-reaction equation,
Concept introduction:
The reactions in which one compound undergoes oxidation while the other undergoes reduction are termed as redox reactions. The molecule or compound which loses one or more electrons is said to be oxidized. The molecule or compound which gains one or more electrons is said to be reduced.
(c)
Interpretation:
The half-reaction equation,
Concept introduction:
The reactions in which one compound undergoes oxidation while the other undergoes reduction are termed as redox reactions. The molecule or compound which loses one or more electrons is said to be oxidized. The molecule or compound which gains one or more electrons is said to be reduced.
(d)
Interpretation:
The half-reaction equation,
Concept introduction:
The reactions in which one compound undergoes oxidation while the other undergoes reduction are termed as redox reactions. The molecule or compound which loses one or more electrons is said to be oxidized. The molecule or compound which gains one or more electrons is said to be reduced.
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EBK INTRODUCTORY CHEMISTRY: AN ACTIVE L
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- Describe what you expect to happen when the following solutions are electrolyzed: a aqueous Na2SO4; b aqueous KBr. That is, what are the electrode reactions? What is the overall reaction?arrow_forwardGold can be dissolved from gold-bearing rock by treating the rock with sodium cyanide in the presence of oxygen. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O() 4 NaAu(CN)2(aq) + 4 NaOH(aq) (a) Name the oxidizing and reducing agents in this reaction. What has been oxidized, and what has been reduced? (b) If you have exactly one metric ton (1 metric ton = 1000 kg) of gold-bearing rock, what volume of 0.075 M NaCN, in liters, do you need to extract the gold if the rock is 0.019% gold?arrow_forwardWrite balanced equations for the following half-reactions. Specify whether each is an oxidation or reduction. (a) H2O2(aq) O2(g)(in acid) (b) H2C2O4(aq) CO2(g)(in acid) (c) NO3(aq) NO(g)(in acid) (d) MnO4(aq) MnO2(s)(in base)arrow_forward
- Balance each of the following oxidationreduction reactions by nsing the oxidation states method. a. Cl2(g) + Al(s) Al3+(aq) + Cl(aq) b. O2(g) + H2O(l) + Ph(s) Ph(OH)2(s) c. H+(aq) + MnO4(aq) + Fe2+(aq) Mn2+(aq) + Fe3+(aq) + H2O(l)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_forwardBalance each of the following oxidationreduction reactions by using the oxidation states method. a.Cl2(g) + Al(s) Al3+(aq) + Cl(aq) b.O2(g) + H2O(l) + Pb(s) Pb(OH)2(s) c.H+(aq)+MnO4(aq)+Fe2+(aq)Mn2+(aq)+Fe3+(aq)+H2O(l)arrow_forward
- Balance each of the following oxidationreduction reactions by using the oxidation states method. a.C2H4(g) + O2(g) CO3(g) + H2O(g) b. Mg(s) + HCl(aq) Mg2+(aq) + Cl(aq) + H2(g) c.Co3+(aq) + Ni(s) Co2+(aq) + Ni2+(aq) d.Zn(s) + H2SO4(aq) ZnSo4(aq) + H2(g)arrow_forwardThe exposed electrodes of a light bulb are placed in a solution of H2SO4 in an electrical circuit such that the light bulb is glowing. You add a dilute salt solution, and the bulb dims. Which of the following could be the salt in the solution? a. Ba(NO3)2 b. NaNO3 c. K2SO4 d. Ca(NO3)2 Justify your choices. For those you did not choose, explain why they are incorrect.arrow_forwardConsider the following cell running under standard conditions: Fe(s)Fe2+(aq)Al3+(aq)Al(s) a Is this a voltaic cell? b Which species is being reduced during the chemical reaction? c Which species is the oxidizing agent? d What happens to the concentration of Fe3+(aq) as the reaction proceeds? e How does the mass of Al(s) change as the reaction proceeds?arrow_forward
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