Homework Answers
a) C4H8 is oxidised to CO2 and O2 is reduced to H2O (loss of hydrogen is oxidation and gain of hydrogen is reduction.
b.) Carbon is reduced (Gain of hydrogen is reduction )
c) Cu is oxidised to Cu2+ and NO3- is reduced to NO2 (loss of electrons is oxidation and gain of electrons is reduction. Cu losses two electrons and NO3- gains one electrons (1:2 reaction)
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C_aH_s + 6O_2 rightarrow 4 CO_2 + 4 H_2 O b) C + 2 H_2 rightarrow...
Classify the following reactions as either: combination, decomposition, combustion, precipitation (metathesis) or redox reactions. C(s) +...
Classify the following reactions as either: combination, decomposition, combustion, precipitation (metathesis) or redox reactions. C(s) + 4 HNO_3 (aq) rightarrow 4 NO_2 (g) + 2 H_2 O (I) + CO_2 (g) HCI (aq) + NH_3 (aq) rightarrow NH_4 CI(aq) 2HI (g) rightarrow H_2 (g) + I_2 (g) Cu(NO_3)_2 9aq) + Na_2 S (aq) rightarrow CuS(s) + 2 NaNO_3 (aq) Zn(s) + 2 AgNO_3 (aq) rightarrow Zn(NO_3)_2 (aq) + 2 Ag(s) H_2 SO_3 (aq) + 2 KOH(aq) rightarrow K_2 SO_3 (aq)...
Indicate which of the following chemical reaction are redox reactions: a. 2Pbs + 3O_2 rightarrow 2PbO...
Indicate which of the following chemical reaction are redox reactions: a. 2Pbs + 3O_2 rightarrow 2PbO + 2SO_2 b. 2AgNO_3 + CuCl_2 rightarrow Cu(NO_3)_2 + 2AgCl c. CH_4 + 2O_2 rightarrow CO_2 + 2H_2 O d. FeCl_2 + 2NaOH rightarrow Fe(OH)_2 + 2NaCl e. 4Fe + 3O_2 rightarrow 2Fe_2 O_3
Which of the following reactions is a Redox reaction? Cu(s) + 4HNO_3 rightarrow Cu(NO_3)_3 + 2...
Which of the following reactions is a Redox reaction? Cu(s) + 4HNO_3 rightarrow Cu(NO_3)_3 + 2 NO_2 + 2H_2O Cu(NO_3)_3 + 2 NaOH rightarrow Cu(OH)_2 + 2NaNO_3 Cu(OH)_2 + HCI rightarrow CuCl_2 + H_2O (a) (I) (b) (II) (c) (III) (d) All of them
Write balanced net ionic equations for the following reactions. Supply H^+ and/or H_2 O as needed...
Write balanced net ionic equations for the following reactions. Supply H^+ and/or H_2 O as needed to obtain balance. (Use the lowest possible coefficients. Omit states of matter. If a box is not needed, leave it blank.) Mn^3+ + Sn^2+ rightarrow Mn^2+ + Sn^4+ Mn^3+ + Sn^2+ + rightarrow Mn^2+ + Sn^4+ + Al(s) + Cu^+ rightarrow Al^3+ + Cu(s) Al(s) + Cu^+ + rightarrow Al^3+ + Cu(s) + NO_3^- + Cu(s) rightarrow NO_2 (g) + Cu^2+ NO_3^- + Cu(s)...
A proposed mechanism for the reaction of NO_2 and CO is 2 NO_2(g) rightarrow NO(g) +...
A proposed mechanism for the reaction of NO_2 and CO is 2 NO_2(g) rightarrow NO(g) + NO_3(g) (Slow, endothermic) NO_3(g) + CO(g) rightarrow NO_2(g) + CO_2(g) (Fast, exothermic) a) Write the overall reaction. b) Identify each of the following as a reactant, product, , or intermediate, NO_2, CO, NO_3, CO_2, NO. c) Draw a reaction coordinate for this reaction. Indicate on this drawing the activation energy for each step and the overall enthalpy change. d) Give a plausible rate law.
Consider the following reaction mechanism: step 1: 2 NO_2 rightarrow NO + NO_3 step 2: NO_3...
Consider the following reaction mechanism: step 1: 2 NO_2 rightarrow NO + NO_3 step 2: NO_3 + CO rightarrow NO_2 + CO_2 What intermediate is involved in this mechanism? NO_2 NO NO_3 CO CO_2 Consider the reaction given below: 2 A(g) + 3 B(g) 2 C(g) delta H = 12.5 kJ/mol K_p = 10.0 If a reaction mixture has the following partial pressures: P_A = 1.0 atm P_B = 2.0 atm P_C = 2.0 atm which of the following statements...
When the following equation is balanced, the coefficients are__C_8H_18 + O_2 rightarrow CO_2 + H_2O 2,...
When the following equation is balanced, the coefficients are__C_8H_18 + O_2 rightarrow CO_2 + H_2O 2, 3, 4, 4 1, 4, 8, 9 2, 12, 8, 9 4, 4, 32, 36 Of the reactions below, which one is got a combination reaction? C + O_2 rightarrow CO_2 2Mg + O_2 rightarrow 2MgO 2N_2 + 3H_2 rightarrow 2NH_3 CaO + H_2O rightarrow Ca(OH)_2 2CH_4 + 4O_2 rightarrow 2CO_2 + 4H_2O
Consider the following reaction: Ca(s) + 2 H_2O(l) rightarrow Ca(OH)_2(s) + H_2(g) Calculate the heat of...
Consider the following reaction: Ca(s) + 2 H_2O(l) rightarrow Ca(OH)_2(s) + H_2(g) Calculate the heat of reaction based on the following information: 2H_2(g) + O_2(g) rightarrow 2 H_2O(l) DeltaH = -572 kJ/mol CaO(s) + H_2O(l) rightarrow Ca(OH)_2(s) DeltaH = -64 kJ/mol CaCO_3(s) rightarrow CaO(s) + CO_2(g) DeltaH = +178.1 kJ/mol 2 Ca (s) + O_2(g) rightarrow 2 CaO(s) DeltaH = -1270 kJ/mol 13. Acetylene is used in blow torches, and bums according to the following equation: 2 C_2H_2(g) + 5...
Determine whether each compound below exhibits a molecular dipole moment: (a) CH_4 (b) NH_3 (c) H_2...
Determine whether each compound below exhibits a molecular dipole moment: (a) CH_4 (b) NH_3 (c) H_2 O (d) CO_2 (e) CCl_4 (f) CH_2 Cl_2
balance equations NaOH + C_6 H_8 O_7 rightarrow NaC_6 H_7 O CaCl_2 + NaI rightarrow CaI_2...
balance equations
NaOH + C_6 H_8 O_7 rightarrow NaC_6 H_7 O CaCl_2 + NaI rightarrow CaI_2 + NaCl^- NaCl + Ca(NO_3)_2 rightarrow Na(NO_3) +
Classify the following reactions as either: combination, decomposition, combustion, precipitation (metathesis) or redox reactions. C(s) + 4 HNO_3 (aq) rightarrow 4 NO_2 (g) + 2 H_2 O (I) + CO_2 (g) HCI (aq) + NH_3 (aq) rightarrow NH_4 CI(aq) 2HI (g) rightarrow H_2 (g) + I_2 (g) Cu(NO_3)_2 9aq) + Na_2 S (aq) rightarrow CuS(s) + 2 NaNO_3 (aq) Zn(s) + 2 AgNO_3 (aq) rightarrow Zn(NO_3)_2 (aq) + 2 Ag(s) H_2 SO_3 (aq) + 2 KOH(aq) rightarrow K_2 SO_3 (aq)...
Indicate which of the following chemical reaction are redox reactions: a. 2Pbs + 3O_2 rightarrow 2PbO + 2SO_2 b. 2AgNO_3 + CuCl_2 rightarrow Cu(NO_3)_2 + 2AgCl c. CH_4 + 2O_2 rightarrow CO_2 + 2H_2 O d. FeCl_2 + 2NaOH rightarrow Fe(OH)_2 + 2NaCl e. 4Fe + 3O_2 rightarrow 2Fe_2 O_3
Which of the following reactions is a Redox reaction? Cu(s) + 4HNO_3 rightarrow Cu(NO_3)_3 + 2 NO_2 + 2H_2O Cu(NO_3)_3 + 2 NaOH rightarrow Cu(OH)_2 + 2NaNO_3 Cu(OH)_2 + HCI rightarrow CuCl_2 + H_2O (a) (I) (b) (II) (c) (III) (d) All of them
Write balanced net ionic equations for the following reactions. Supply H^+ and/or H_2 O as needed to obtain balance. (Use the lowest possible coefficients. Omit states of matter. If a box is not needed, leave it blank.) Mn^3+ + Sn^2+ rightarrow Mn^2+ + Sn^4+ Mn^3+ + Sn^2+ + rightarrow Mn^2+ + Sn^4+ + Al(s) + Cu^+ rightarrow Al^3+ + Cu(s) Al(s) + Cu^+ + rightarrow Al^3+ + Cu(s) + NO_3^- + Cu(s) rightarrow NO_2 (g) + Cu^2+ NO_3^- + Cu(s)...
A proposed mechanism for the reaction of NO_2 and CO is 2 NO_2(g) rightarrow NO(g) + NO_3(g) (Slow, endothermic) NO_3(g) + CO(g) rightarrow NO_2(g) + CO_2(g) (Fast, exothermic) a) Write the overall reaction. b) Identify each of the following as a reactant, product, , or intermediate, NO_2, CO, NO_3, CO_2, NO. c) Draw a reaction coordinate for this reaction. Indicate on this drawing the activation energy for each step and the overall enthalpy change. d) Give a plausible rate law.
Consider the following reaction mechanism: step 1: 2 NO_2 rightarrow NO + NO_3 step 2: NO_3 + CO rightarrow NO_2 + CO_2 What intermediate is involved in this mechanism? NO_2 NO NO_3 CO CO_2 Consider the reaction given below: 2 A(g) + 3 B(g) 2 C(g) delta H = 12.5 kJ/mol K_p = 10.0 If a reaction mixture has the following partial pressures: P_A = 1.0 atm P_B = 2.0 atm P_C = 2.0 atm which of the following statements...
When the following equation is balanced, the coefficients are__C_8H_18 + O_2 rightarrow CO_2 + H_2O 2, 3, 4, 4 1, 4, 8, 9 2, 12, 8, 9 4, 4, 32, 36 Of the reactions below, which one is got a combination reaction? C + O_2 rightarrow CO_2 2Mg + O_2 rightarrow 2MgO 2N_2 + 3H_2 rightarrow 2NH_3 CaO + H_2O rightarrow Ca(OH)_2 2CH_4 + 4O_2 rightarrow 2CO_2 + 4H_2O
Consider the following reaction: Ca(s) + 2 H_2O(l) rightarrow Ca(OH)_2(s) + H_2(g) Calculate the heat of reaction based on the following information: 2H_2(g) + O_2(g) rightarrow 2 H_2O(l) DeltaH = -572 kJ/mol CaO(s) + H_2O(l) rightarrow Ca(OH)_2(s) DeltaH = -64 kJ/mol CaCO_3(s) rightarrow CaO(s) + CO_2(g) DeltaH = +178.1 kJ/mol 2 Ca (s) + O_2(g) rightarrow 2 CaO(s) DeltaH = -1270 kJ/mol 13. Acetylene is used in blow torches, and bums according to the following equation: 2 C_2H_2(g) + 5...
Determine whether each compound below exhibits a molecular dipole moment: (a) CH_4 (b) NH_3 (c) H_2 O (d) CO_2 (e) CCl_4 (f) CH_2 Cl_2
balance equations
NaOH + C_6 H_8 O_7 rightarrow NaC_6 H_7 O CaCl_2 + NaI rightarrow CaI_2 + NaCl^- NaCl + Ca(NO_3)_2 rightarrow Na(NO_3) +
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