Recent questions in Chemistry

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Calculate the change in enthalpy and entropy for the reaction Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) at 25°C given the following data:- ΔH°f for MgCl2(aq) = -641.3 kJ/mol- ΔS°f for MgCl2(aq) = -200.9 J/K/mol- ΔH°f for H2(g) = 0 kJ/mol- ΔS°f for H2(g) = 130.7 J/K/mol- ΔH°f for HCl(aq) = -167 kJ/mol- ΔS°f for HCl(aq) = -18.8 J/K/mol- ΔH°f for Mg(s) = 0 kJ/mol- ΔS°f for Mg(s) = 32.7 J/K/molAssume that ΔH°f and ΔS°f are independent of temperature.

asked Jan 23 in Inorganic Chemistry by ArleneLeichh (2.1k points)

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1 answer 69 views

Calculate the change in enthalpy (ΔH) for the following reaction at 25°C given the standard enthalpies of formation for each compound: 2H2(g) + O2(g) → 2H2O(g) Standard enthalpies of formation: ΔHf° (H2O)(g) = -241.82 kJ/molΔHf° (H2)(g) = 0 kJ/molΔHf° (O2)(g) = 0 kJ/mol

asked Jan 23 in Physical Chemistry by TatianaSteil (2.3k points)

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1 answer 72 views

Calculate the change in enthalpy (ΔH) for the combustion of methane gas (CH4) at 25°C and constant pressure of 1 atm. The equation for the combustion of methane is:CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (l) Given the standard enthalpies of formation at 25°C are:ΔHf[CH4 (g)] = -74.87 kJ/mol ΔHf[CO2 (g)] = -393.5 kJ/mol ΔHf[H2O (l)] = -285.8 kJ/mol Assume that water is in its liquid phase at the end of the reaction.

asked Jan 23 in Physical Chemistry by RobertoLafla (2.1k points)

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1 answer 72 views

Calculate the change in enthalpy (ΔH) for the combustion of 10 grams of propane (C3H8) if the heat released by the reaction is -2202 kJ.

asked Jan 23 in Chemical reactions by AdelineBurro (1.9k points)

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1 answer 73 views

Calculate the cell potential for the reaction:Hg2Cl2(s) + 2 Cl-(aq) → 2 Hg(l) + 2 Cl2(g)Given the standard reduction potentials: Hg2Cl2(s) + 2 e- → 2 Hg(l) + 2 Cl-(aq) E° = 0.268 VCl2(g) + 2 e- → 2 Cl-(aq) E° = 1.36 V

asked Jan 23 in ElectroChemistry by FletaStepp73 (2.0k points)

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1 answer 86 views

Calculate the cell potential for the reaction between a silver electrode and a copper electrode, given that the silver electrode is immersed in a 0.1 M AgNO3 solution and the copper electrode is immersed in a 1.0 M CuSO4 solution at 25°C. (Standard electrode potentials of Ag and Cu electrodes are +0.80 V and +0.34 V, respectively. Carry out the calculation in steps and provide the final answer with appropriate units.)

asked Jan 23 in ElectroChemistry by ChristieJzq (1.7k points)

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1 answer 66 views

Calculate the cell potential for the following galvanic cell where a nickel anode is placed in a 1.0M Ni(NO3)2 solution and a silver cathode is placed in a 1.0M AgNO3 solution. The balanced equation for the cell reaction is: Ni(s) + 2 Ag+(aq) → Ni2+(aq) +2 Ag(s) Assume that standard reduction potentials for each half-reaction are as follows: Ni2+(aq) + 2 e- ⇌ Ni(s) E° = -0.25V Ag+(aq) + e- ⇌ Ag(s) E° = +0.80V What is the cell potential at standard conditions (25°C and 1 atm)?

asked Jan 23 in ElectroChemistry by GermanFranki (1.8k points)

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1 answer 81 views

Calculate the cell potential for the following electrochemical reaction:Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s)Given that the standard reduction potentials for the half-reactions are as follows:Zn2+(aq) + 2e- → Zn(s) E° = -0.76 VCu2+(aq) + 2e- → Cu(s) E° = +0.34 V

asked Jan 23 in ElectroChemistry by TobiasTudawa (1.9k points)

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1 answer 68 views

Calculate the cell potential for the following electrochemical reaction: Cu(s) + 2 Ag+(aq) → Cu2+(aq) + 2 Ag(s) The standard reduction potentials are: Cu2+(aq) + 2 e- → Cu(s) E° = 0.34 V Ag+(aq) + e- → Ag(s) E° = 0.80 V

asked Jan 23 in ElectroChemistry by FinleySalern (1.6k points)

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1 answer 74 views

Calculate the cell potential for the following electrochemical reaction: Cu(s) + 2 Ag⁺(aq) → Cu²⁺(aq) + 2 Ag(s) Given that the standard reduction potentials are: Cu²⁺(aq) + 2e⁻ → Cu(s) E° = +0.34 V Ag⁺(aq) + e⁻ → Ag(s) E° = +0.80 V

asked Jan 23 in ElectroChemistry by AundreaWhitf (1.8k points)

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1 answer 73 views

Calculate the cell potential for the following electrochemical reaction at 25°C: Zn(s) + 2AgNO3(aq) → Zn(NO3)2(aq) + 2Ag(s) Given: E°(Ag+/Ag) = +0.80 V E°(Zn2+/Zn) = −0.76 V

asked Jan 23 in ElectroChemistry by Lynell160113 (1.8k points)

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1 answer 89 views

Calculate the cell potential for a given electrochemical reaction where the half-cell reactions are:* Fe3+(aq) + e- → Fe2+(aq) E° = 0.77 V* Ag+(aq) + e- → Ag(s) E° = 0.80 VAssume 1.0 M solutions and standard state conditions. Determine whether the reaction is spontaneous or non-spontaneous under standard conditions.

asked Jan 23 in ElectroChemistry by AntoniettaLa (1.9k points)

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1 answer 24 views

Calculate the cell potential at standard conditions for the electrochemical reaction: Cu(s) + 2Ag+(aq) -> 2Ag(s) + Cu2+(aq) given that the standard reduction potentials for Cu2+(aq)/Cu(s) and Ag+(aq)/Ag(s) are +0.34 V and +0.80 V, respectively.

asked Jan 23 in ElectroChemistry by MoniqueBrins (1.9k points)

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1 answer 89 views

Calculate the bond order of the nitrogen molecule (N2) using molecular orbital theory.

asked Jan 23 in Physical Chemistry by LorenzoWooll (1.7k points)

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1 answer 91 views

Calculate the bond order of the molecule NO using molecular orbital theory, given that the nitrogen atom has four valence electrons and the oxygen atom has six valence electrons.

asked Jan 23 in Chemical bonding by Lachlan74F5 (2.0k points)

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1 answer 91 views

Calculate the bond order of the molecule N2+ using molecular orbital theory, given that the atomic number of nitrogen is 7.

asked Jan 23 in Chemical bonding by TamikaCarril (2.2k points)

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1 answer 64 views

Calculate the bond order of O2, O2+, O2- and O22-.

asked Jan 23 in Chemical bonding by VeroniqueBig (1.6k points)

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1 answer 75 views

Calculate the bond order and predict the stability of O2 molecule using molecular orbital theory.

asked Jan 23 in Chemical bonding by CierraVivier (2.2k points)

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1 answer 67 views

Calculate the bond order and bond length of the O-O bond in hydrogen peroxide (H2O2)? Show your work and explain your reasoning.

asked Jan 23 in Inorganic Chemistry by BrentAshcrof (1.5k points)

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1 answer 63 views

Calculate the bond order and bond length of the N-O bond in the nitrite ion (NO2-).

asked Jan 23 in Inorganic Chemistry by ZellaSeamon3 (1.6k points)

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