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Calculate the standard enthalpy change for the precipitation reaction of solid silver chloride (AgCl) from the aqueous solution with the precipitation agent, hydrochloric acid (HCl). Given the molar enthalpies of formation of AgCl(s) and HCl(g) are -127.01 kJ/mol and -92.31 kJ/mol, respectively. The balanced equation for the reaction is: AgNO3(aq) + HCl(aq) → AgCl(s) + HNO3(aq)

asked 4 days ago in Chemical thermodynamics by FinlayBaumga (450 points)

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Calculate the standard enthalpy change for the reaction: 2NaOH (s) + H2SO4 (aq) → Na2SO4 (aq) + 2H2O (l)given that the standard enthalpy of formation of Na2SO4 (aq) is -1385 kJ/mol, and the standard enthalpies of formation of NaOH (s), H2SO4 (aq) and H2O (l) are -425 kJ/mol, -814 kJ/mol and -286 kJ/mol respectively.

asked 4 days ago in Chemical thermodynamics by RyanBeahm39 (510 points)

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How does changing the concentration of the reactants affect the rate of the chemical reaction and ultimately the profitability of the reaction?

asked 5 days ago in Chemical kinetics by KeriLoeffler (430 points)

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Calculate the standard enthalpy change for the formation of ethylene glycol (C2H6O2) from its elements given that the standard enthalpies of formation of carbon dioxide, water, and ethylene glycol are -393.5 kJ/mol, -285.8 kJ/mol, and -421.1 kJ/mol respectively.

asked 4 days ago in Chemical thermodynamics by RubyeMorley (450 points)

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Calculate the standard enthalpy change for the formation of carbon dioxide (CO2) from its elements, given the following standard enthalpies of formation:ΔHf°(CO2) = -393.5 kJ/molΔHf°(C) = 0 kJ/molΔHf°(O2) = 0 kJ/mol

asked 4 days ago in Chemical thermodynamics by MyraU0675270 (510 points)

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Calculate the standard enthalpy change of the oxidation of hydrogen gas (H2) to form water (H2O) at 298 K, given that the standard enthalpy of formation of water is -285.8 kJ/mol and the bond dissociation enthalpy of the H-H bond is 436 kJ/mol.

asked 4 days ago in ThermoChemistry by FrancisCropp (430 points)

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How does changing the reaction conditions, such as temperature and pressure, affect the properties of the final product in the production of polymers?

asked 5 days ago in Chemical engineering by DwaynePringl (490 points)

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Calculate the standard free energy change (∆G°) for the reaction: 2CH4(g) + 3O2(g) → 2CO2(g) + 2H2O(l) at 298 K, given that the standard enthalpy change (∆H°) of the reaction is -890.4 kJ mol^-1 and the standard entropy change (∆S°) of the reaction is +292.2 J K^-1 mol^-1. Is the reaction spontaneous or non-spontaneous under standard conditions?

asked 4 days ago in Physical Chemistry by WendyHenning (490 points)

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Calculate the standard enthalpy change for the phase transition of solid ice to liquid water, given the heat of fusion of ice is 6.01 kJ/mol and the molar heat capacity of water is 75.3 J/mol·K.

asked 4 days ago in Chemical thermodynamics by Joni19843671 (770 points)

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Calculate the pH of a 0.2 M solution of acetic acid (Ka = 1.8 x 10^-5) at 25°C.

asked 5 days ago in Chemical reactions by MckinleyAlba (430 points)

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Calculate the pH of a 0.1 M solution of acetic acid (Ka = 1.8 x 10^-5).

asked 5 days ago in Chemical reactions by Newton78P742 (530 points)

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Calculate the percentage change in the concentration of reactants and products in a chemical equilibrium when the concentration of a common ion is increased by 0.1M. The equilibrium constant for the reaction is Kc = 1.5 x 10^-5 M at a certain temperature.

asked 5 days ago in Chemical equilibrium by GiselleRoot (530 points)

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Calculate the standard enthalpy change for the neutralization of 50 mL of 0.1 M hydrochloric acid with 50 mL of 0.1 M sodium hydroxide at a constant temperature of 25°C, given that the specific heat capacity of the resulting solution is 4.18 J/g°C and its density is 1 g/mL.

asked 4 days ago in Chemical thermodynamics by OZGAustin772 (390 points)

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What is the effect of changing the concentration of reactants on the reaction rate and yield of a chemical reaction?

asked 5 days ago in Chemical kinetics by OuidaKoop84 (490 points)

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Calculate the standard enthalpy change for the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH) to form sodium chloride (NaCl) and water (H2O) when 50.0 mL of 1.0 M HCl reacts with 50.0 mL of 1.0 M NaOH at 25°C.

asked 4 days ago in Chemical thermodynamics by SilasBodifor (550 points)

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Calculate the standard enthalpy change for the neutralization of 25.0 mL of 1.0 M hydrochloric acid (HCl) with 25.0 mL of 1.0 M sodium hydroxide (NaOH) solution at 25°C, given that the specific heat capacity of the solutions is 4.18 J/g°C, and the density of the solutions is 1.00 g/mL.

asked 4 days ago in Chemical thermodynamics by ElmerAnderse (470 points)

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Calculate the standard enthalpy change for the vaporization of 1 mole of water at 100°C, given that the enthalpy of fusion of water is 6.01 kJ/mol and the enthalpy of vaporization of water is 40.7 kJ/mol.

asked 4 days ago in Chemical thermodynamics by ValeriaMetca (450 points)

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1 answer 30 views

Calculate the standard electrode potential for the following redox reaction: Zn(s) + Cu²⁺(aq) → Zn²⁺(aq) + Cu(s)Given that the standard electrode potential for the Zn²⁺/Zn electrode is -0.76V and for the Cu²⁺/Cu electrode is +0.34V.

asked 5 days ago in ElectroChemistry by SadieCrosby (570 points)

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Calculate the resistance of a electrochemical cell at 25°C if the standard reduction potential of the anode is -1.36 V and the standard reduction potential of the cathode is +0.40 V. The solution contains 0.1 M CuSO4 and 0.01 M ZnSO4. The distance between the two electrodes is 5 cm and the cross-sectional area of each electrode is 2.5 cm².

asked 5 days ago in ElectroChemistry by ArlenAbt9111 (390 points)

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How does changing the concentration of reactants affect the reaction rate and ultimately the reaction yield in a chemical reaction?

asked 5 days ago in Chemical kinetics by DannAnstey3 (350 points)

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