Homework Answers
NO2 disproportionate to give HNO3 and HNO2.
The balanced equation for this is :-
2NO2 + H2O -----> HNO3 + HNO2.
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(2) (4 pts) Gaseous nitrogen dioxide disproportionates spontaneously into nitric acid and nitrous acid in acidic aqueo...
(2) (4 pts) Gaseous nitrogen dioxide disproportionates spontaneously into nitric acid and nitrous acid in acidic aqueous...
(2) (4 pts) Gaseous nitrogen dioxide disproportionates spontaneously into nitric acid and nitrous acid in acidic aqueous solution. Show this by writing the balanced chemical reaction and evaluating the standard emf (in V) for the reaction.
(3) (4 pts) Nitrous acid will not disproportionate spontaneously to the gases nitrogen dioxide and nitric...
(3) (4 pts) Nitrous acid will not disproportionate spontaneously
to the gases nitrogen dioxide and nitric oxide. Show this by
writing the balanced chemical reaction and evaluating the standard
emf (in V) for the reaction.
(4) (22 pts) Gold metal dissolves in aqua regia, which is a mixture of concentrated hydrochloric...
(4) (22 pts) Gold metal dissolves in aqua regia, which is a mixture of concentrated hydrochloric and concentrated nitric acids, but gold does not dissolve in either acid separately. (You may write net ionic equations in this problem.) (a) (6 pts) Write a balanced chemical equation for the reaction of gold and nitric acid to produce Au(aq) and nitric oxide. Calculate the standard emf (in V) for this reaction. Is this reaction spontaneous under standard conditions at 25°C? (b) (6...
a Nitrous acid and sodium hydrogen carbonate, NaHCO3, are mixed in water. Choose a balanced net...
a Nitrous acid and sodium hydrogen carbonate, NaHCO3, are mixed in water. Choose a balanced net ionic equation for the acid-base reaction that could, in principle, occur. HNO2() + NaHCO3(s) + H2O(l) Na+ (aq) + HCO3(aq) + NO3- (aq) + H+ (aq) HNO2 (aq) + NaHCO3(aq) = NaNO2 (aq) + H2CO3(aq) HNO2 (aq) + HCO3- (aq) = NO2 (aq) + H2CO3(aq) HNO2 (aq) + NaHCO3(aq) = NaNO2 (aq) + H2O() + CO2(g)
a Choose the balanced equation for the following half-reaction, which takes place in acidic solution НВFO,(ag)...
a Choose the balanced equation for the following half-reaction, which takes place in acidic solution НВFO,(ag) —> Вr (aq) 4 8e7H (aq) + HBr04 (aq) -> Br (aq) + 4H20(1) 8e H (aq)HBrO4 (aq) -> Br (aq)4H20() Se + 7H* (ag) + HBFO, (ag) — 2Br (аq) + 4H20() Зе + 7H* (ад) + HBFO4(ag) — Br (aq) + 4H20() b Choose the balanced equation for the following half-reaction, which takes place in acidic solution NO3 (ag) > NО2(9) 3e2H...
(3) (4 pts) Nitrous acid will not disproportionate spontaneously to the gases nitrogen dioxide and nitric oxide. Show th...
(3) (4 pts) Nitrous acid will not disproportionate spontaneously to the gases nitrogen dioxide and nitric oxide. Show this by writing the balanced chemical reaction and evaluating the standard emf (in V) for the reaction.
(4) (22 pts) Gold metal dissolves in aqua regia, which is a mixture of concentrated hydrochloric...
(4) (22 pts) Gold metal dissolves in aqua regia, which is a mixture of concentrated hydrochloric and concentrated nitric acids, but gold does not dissolve in either acid separately. (You may write net ionic equations in this problem.) (a) (6 pts) Write a balanced chemical equation for the reaction of gold and nitric acid to produce Aut(aq) and nitric oxide. Calculate the standard emf (in V) for this reaction. Is this reaction spontaneous under standard conditions at 25°C? (b) (6...
Concentrated nitric acid reacts with solid copper to give nitrogen dioxide gas and dissolved copper ions...
Concentrated nitric acid reacts with solid copper to give nitrogen dioxide gas and dissolved copper ions according to the equation: Cu(s) + 4 H+(aq) + 2 NO3 - (aq) → 2 NO2(g) + Cu2+(aq) + 2 H2O(l) Suppose that 6.80 g of copper is consumed in this reaction and that the NO2 is collected at a pressure of 0.970 atm and a temperature of 45 oC. What volume of NO2 is produced?
The equilibrium constant for the equation HNO3(aq) + H2O(l) = H, 0+ (aq) + NO2 (aq) is Kg = 5.6 x 10-4 M at 25.0 °C. Ca...
The equilibrium constant for the equation HNO3(aq) + H2O(l) = H, 0+ (aq) + NO2 (aq) is Kg = 5.6 x 10-4 M at 25.0 °C. Calculate the value of AGixn at 25.0 °C for nitrous acid when [NO2] = [H3O+] = [HNO2] = 1.00 M. AGixn = kJ/mol Will the acid spontaneously dissociate under these conditions? O no O yes Calculate the value of AGrxn for nitrous acid when [NO, ] = [H,O+] = 7.13 x 10- M and...
Need help on questions 1-3 Henderson-Hasselbalch: pH=pka + Log( [base]/(acid] ) 1. The value of Ka...
Need help on questions 1-3
Henderson-Hasselbalch: pH=pka + Log( [base]/(acid] ) 1. The value of Ka of nitrous acid (HNO2) is 4.6 x 104 M. Calculate the pH and the concentration of [H3O+] in a 0.02M aqueous solution of HNO2(aq). 2. Label conjugate acid-base pairs: HNO2(aq) + H2O → H30* + NO2 (aq) 3. What will happen to the reaction equilibrium if we increase the pressure in the reaction vessel? H2(g) + 12(e) → 2 HI(g)
(3) (4 pts) Nitrous acid will not disproportionate spontaneously
to the gases nitrogen dioxide and nitric oxide. Show this by
writing the balanced chemical reaction and evaluating the standard
emf (in V) for the reaction.
(4) (22 pts) Gold metal dissolves in aqua regia, which is a mixture of concentrated hydrochloric and concentrated nitric acids, but gold does not dissolve in either acid separately. (You may write net ionic equations in this problem.) (a) (6 pts) Write a balanced chemical equation for the reaction of gold and nitric acid to produce Au(aq) and nitric oxide. Calculate the standard emf (in V) for this reaction. Is this reaction spontaneous under standard conditions at 25°C? (b) (6...
a Nitrous acid and sodium hydrogen carbonate, NaHCO3, are mixed in water. Choose a balanced net ionic equation for the acid-base reaction that could, in principle, occur. HNO2() + NaHCO3(s) + H2O(l) Na+ (aq) + HCO3(aq) + NO3- (aq) + H+ (aq) HNO2 (aq) + NaHCO3(aq) = NaNO2 (aq) + H2CO3(aq) HNO2 (aq) + HCO3- (aq) = NO2 (aq) + H2CO3(aq) HNO2 (aq) + NaHCO3(aq) = NaNO2 (aq) + H2O() + CO2(g)
a Choose the balanced equation for the following half-reaction, which takes place in acidic solution НВFO,(ag) —> Вr (aq) 4 8e7H (aq) + HBr04 (aq) -> Br (aq) + 4H20(1) 8e H (aq)HBrO4 (aq) -> Br (aq)4H20() Se + 7H* (ag) + HBFO, (ag) — 2Br (аq) + 4H20() Зе + 7H* (ад) + HBFO4(ag) — Br (aq) + 4H20() b Choose the balanced equation for the following half-reaction, which takes place in acidic solution NO3 (ag) > NО2(9) 3e2H...
(4) (22 pts) Gold metal dissolves in aqua regia, which is a mixture of concentrated hydrochloric and concentrated nitric acids, but gold does not dissolve in either acid separately. (You may write net ionic equations in this problem.) (a) (6 pts) Write a balanced chemical equation for the reaction of gold and nitric acid to produce Aut(aq) and nitric oxide. Calculate the standard emf (in V) for this reaction. Is this reaction spontaneous under standard conditions at 25°C? (b) (6...
The equilibrium constant for the equation HNO3(aq) + H2O(l) = H, 0+ (aq) + NO2 (aq) is Kg = 5.6 x 10-4 M at 25.0 °C. Calculate the value of AGixn at 25.0 °C for nitrous acid when [NO2] = [H3O+] = [HNO2] = 1.00 M. AGixn = kJ/mol Will the acid spontaneously dissociate under these conditions? O no O yes Calculate the value of AGrxn for nitrous acid when [NO, ] = [H,O+] = 7.13 x 10- M and...
Need help on questions 1-3
Henderson-Hasselbalch: pH=pka + Log( [base]/(acid] ) 1. The value of Ka of nitrous acid (HNO2) is 4.6 x 104 M. Calculate the pH and the concentration of [H3O+] in a 0.02M aqueous solution of HNO2(aq). 2. Label conjugate acid-base pairs: HNO2(aq) + H2O → H30* + NO2 (aq) 3. What will happen to the reaction equilibrium if we increase the pressure in the reaction vessel? H2(g) + 12(e) → 2 HI(g)
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