Homework Answers
46. H2O(g) + CO(g) ---> H2(g) + CO2(g)
The oxidation state of hydrogen decreases from +1 to 0
. It is reduction
a. H2O
47.I^-(aq) + ClO^-(aq) -------> IO^- (aq) + Cl^- (aq)
The oxidation state of Cl reduced from +1 to -1 . It is
reduced
Ce. ClO^-
48. more electronegative elements act as oxidizing agent
a. Br2
49. BaFeO4
+2+x+(4*-2) = 0
x = 6
The oxidation state of Fe is +6
c.6
50. d. 1 and 3
51. e. none
52. 1.AgNO3(aq) + HCl(aq) ------> AgCl(s) + HNO3(aq)
a. 1 only
53.a.CaCO3(s) ---> CaO(s) + CO2(g)
No change in oxidation state
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46. Which species in the reaction below undergoes reduction? H2O(g) + CO(g) -H2(g) + CO2(g) a....
RODOX EXAMINATION An oxidation-reduction reaction involves the (1) sharing of electrons &n
RODOX EXAMINATION An oxidation-reduction reaction involves the (1) sharing of electrons (3) transfer of electrons (2) sharing of protons (4) transfer of protons In this reaction, CO→ 2 CO + O2 the oxidation number of carbon changes from: (1) 0 to +4 (3) +3 to 0 (2) +2 to +4 (4) +4 to +2 Which balanced equation represents a redox reaction? AgNO3 (aq) +NaCl (aq) →AgCl (s) +NaNO3 (aq) H2CO3 (aq)...
Identify the oxidation-reduction reaction among the following: Zn(s)+CuBr2(aq)>ZnBr2(aq) + CU (s), 2Na(s)+Cl29(aq) > 2NaCl(s). 2Mg(s) +...
Identify the oxidation-reduction reaction among the following: Zn(s)+CuBr2(aq)>ZnBr2(aq) + CU (s), 2Na(s)+Cl29(aq) > 2NaCl(s). 2Mg(s) + O2(g) > 2MgO(s). A) 1and 2 only, B) 1and 3 only, C 2 and 3 only D). all . E) None of the above
List whether the following equations are classified as single replacement, double replacement, combination, decomposition, combustion and/or...
List whether the following equations are classified as single replacement, double replacement, combination, decomposition, combustion and/or oxidation reaction. 1) 2Mg(s) + O2(g) -> 2MgO(s) 2) Mg(s) + 2HCL (aq) -> MgCl2(aq) + H2 3) FeCl3 + 3NaOH -> Fe(OH)3 + 3NaCl 4) 3CuCl2 + 2Al -> 2AlCl3 + 3Cu 5) NaCl(aq) + AgNO3(aq) -> AgCl(s) + NaNO3 6) (NH4)2CO3 -> 2NH3 + CO2 + H20
Which of the reactions are exothermic? 2Mg(s)+O2(g)⟶2MgO(s)+heat2Mg(s)+O2(g)⟶2MgO(s)+heat NH3(g)+HCl(g)⟶NH4Cl(s)+heatNH3(g)+HCl(g)⟶NH4Cl(s)+heat AgCl(s)+heat⟶Ag+(aq)+Cl−(aq)AgCl(s)+heat⟶Ag+(aq)+Cl−(aq) 2Fe2O3(s)+3C(s)+heat⟶4Fe(s)+3CO2(g)2Fe2O3(s)+3C(s)+h
Which of the reactions are exothermic? 2Mg(s)+O2(g)⟶2MgO(s)+heat2Mg(s)+O2(g)⟶2MgO(s)+heat NH3(g)+HCl(g)⟶NH4Cl(s)+heatNH3(g)+HCl(g)⟶NH4Cl(s)+heat AgCl(s)+heat⟶Ag+(aq)+Cl−(aq)AgCl(s)+heat⟶Ag+(aq)+Cl−(aq) 2Fe2O3(s)+3C(s)+heat⟶4Fe(s)+3CO2(g)2Fe2O3(s)+3C(s)+heat⟶4Fe(s)+3CO2(g) C(graphite)+O2(g)⟶CO2(g)+heatC(graphite)+O2(g)⟶CO2(g)+heat CH4(g)+2O2(g)⟶CO2(g)+2H2O(l)+heat
4. Which of the following statements about the voltaic cell shown below is correct? Zn(s)[Zn** (aq)||...
4. Which of the following statements about the voltaic cell shown below is correct? Zn(s)[Zn** (aq)|| Cu** (aq)|Cu(s) (a) The oxidation half-reaction is clearly Zn(s) ® Zn** (aq) + 2 e. (b) The oxidation half-reaction is clearly Zn() Zn" (aq) +le. (C) The oxidation half-reaction could not be anything other than Cu(s) ® Cu (aq) +2 e. (d) It is obvious that the oxidation half-reaction is Zn(s) ® Cu(s). 5. Which of the following statements about the voltaic cell shown...
1. For the oxidation-reduction reaction Zn(s) + 2HNO3 (aq) → H2(g) + Zn(NO3)2 (aq) Hint: HNO3...
1. For the oxidation-reduction reaction Zn(s) + 2HNO3 (aq) → H2(g) + Zn(NO3)2 (aq) Hint: HNO3 a) provide equation for the oxidation half-reaction: b) provide equation for the reduction half-reaction: In the given equation above or in your answers to a) and b): c) label the substance which is oxidizing agent, d) label the substance which is reducing agent.
for each reaction- classify as oxidation-reduction,acid-base or precipitation Classify each of the following reactions as oxidation-reduction,...
for each reaction- classify as oxidation-reduction,acid-base
or precipitation
Classify each of the following reactions as oxidation-reduction, acid-base, or Note that in order to be a redox reaction, the oxidation number of an element must be different when it is a reactant than when it is a product. (1 point each) precipitation. Classification Reaction Number 24 Ca (s) +2 H2O ()- Ca(OH)2 (s) + H2 (g) 25 CdCl2 (aq)+ Na2S (aq)CdS (s) +2 NaCl (aq) Zn(OH)2 (s) + H2SO4 (aq)ZnSO4 (aq)...
4.) (20%) Which one of the following is an acid base reaction? a) C(s) + O2(g)...
4.) (20%) Which one of the following is an acid base reaction? a) C(s) + O2(g) → CO2(g) b) 2 HCl(aq) + Ca(OH)2(aq) + 2 H2O(1) + CaCl2(aq) c) Fe(s) + 2 AgNO3(aq) — 2 Ag(s) + Fe(NO3)2(aq) d) MgSO4(aq) + Ba(NO3)2(aq) + Mg(NO3)2(aq) + BaSO4(s) e) None of the above are acid base reactions.
Test IV (Electrochemistry) 2018 Fall What is the oxidation number for the Which of the following...
Test IV (Electrochemistry) 2018 Fall What is the oxidation number for the Which of the following is true concerning a galvanic cell? (A) Oxidation occurs at the anode and is 1. 8. underlined manganese in Mn04 (A)-8 (8)-2 (C)-1 (D)4 (E) 7 where anions move towards where anions move towards where cations move towards where anions move towards where anions move towards 2. When balancing the below half-reaction in acidic solutionelectrons are added to the (B) Oxidation occurs at the...
IU. AS is positive for the reaction A) CaO (s) + CO2 (g) CaCO3 (S) B)...
IU. AS is positive for the reaction A) CaO (s) + CO2 (g) CaCO3 (S) B) N2 (g) + 3H2(g) → 2NH3 (g) C) 2503 (g) - 2802 (g) + O2 (g) D) Ag+ (aq) + Cl- (aq) → AgCl (s) E) H20 (1) + H20 (s) 11. AS is positive for the reaction A)2 Ca(s) + O2 (g) 2 Cao (s) B) 2 KClO3 (s) 2KCI(S) + 30 (g) C) HCl (8) + NH3 (8) ► NH4Cl (s) D)...
4. Which of the following statements about the voltaic cell shown below is correct? Zn(s)[Zn** (aq)|| Cu** (aq)|Cu(s) (a) The oxidation half-reaction is clearly Zn(s) ® Zn** (aq) + 2 e. (b) The oxidation half-reaction is clearly Zn() Zn" (aq) +le. (C) The oxidation half-reaction could not be anything other than Cu(s) ® Cu (aq) +2 e. (d) It is obvious that the oxidation half-reaction is Zn(s) ® Cu(s). 5. Which of the following statements about the voltaic cell shown...
1. For the oxidation-reduction reaction Zn(s) + 2HNO3 (aq) → H2(g) + Zn(NO3)2 (aq) Hint: HNO3 a) provide equation for the oxidation half-reaction: b) provide equation for the reduction half-reaction: In the given equation above or in your answers to a) and b): c) label the substance which is oxidizing agent, d) label the substance which is reducing agent.
for each reaction- classify as oxidation-reduction,acid-base
or precipitation
Classify each of the following reactions as oxidation-reduction, acid-base, or Note that in order to be a redox reaction, the oxidation number of an element must be different when it is a reactant than when it is a product. (1 point each) precipitation. Classification Reaction Number 24 Ca (s) +2 H2O ()- Ca(OH)2 (s) + H2 (g) 25 CdCl2 (aq)+ Na2S (aq)CdS (s) +2 NaCl (aq) Zn(OH)2 (s) + H2SO4 (aq)ZnSO4 (aq)...
4.) (20%) Which one of the following is an acid base reaction? a) C(s) + O2(g) → CO2(g) b) 2 HCl(aq) + Ca(OH)2(aq) + 2 H2O(1) + CaCl2(aq) c) Fe(s) + 2 AgNO3(aq) — 2 Ag(s) + Fe(NO3)2(aq) d) MgSO4(aq) + Ba(NO3)2(aq) + Mg(NO3)2(aq) + BaSO4(s) e) None of the above are acid base reactions.
Test IV (Electrochemistry) 2018 Fall What is the oxidation number for the Which of the following is true concerning a galvanic cell? (A) Oxidation occurs at the anode and is 1. 8. underlined manganese in Mn04 (A)-8 (8)-2 (C)-1 (D)4 (E) 7 where anions move towards where anions move towards where cations move towards where anions move towards where anions move towards 2. When balancing the below half-reaction in acidic solutionelectrons are added to the (B) Oxidation occurs at the...
IU. AS is positive for the reaction A) CaO (s) + CO2 (g) CaCO3 (S) B) N2 (g) + 3H2(g) → 2NH3 (g) C) 2503 (g) - 2802 (g) + O2 (g) D) Ag+ (aq) + Cl- (aq) → AgCl (s) E) H20 (1) + H20 (s) 11. AS is positive for the reaction A)2 Ca(s) + O2 (g) 2 Cao (s) B) 2 KClO3 (s) 2KCI(S) + 30 (g) C) HCl (8) + NH3 (8) ► NH4Cl (s) D)...
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