Recent questions in Chemical thermodynamics

0 votes

1 answer 66 views

Calculate the standard enthalpy change for the reaction of [Co(H2O)6]2+(aq) with 2 Cl-(aq) to form [CoCl4]2-(aq) and 6 H2O(l) at a temperature of 298 K. Given the following thermodynamic data:[Co(H2O)6]2+(aq) + 4 Cl-(aq) → [CoCl4]2-(aq) + 6 H2O(l) ΔH°= -98.7 kJ mol-1[Co(H2O)6]2+(aq) + 2 Cl-(aq) → [CoCl4]2-(aq) + 4 H2O(l) ΔH°= -65.5 kJ mol-1Assume that the enthalpy of hydration for Cl- (aq) is -364 kJ mol-1.

asked Feb 3 in Chemical thermodynamics by AdelaideDunn (1.8k points)

0 votes

1 answer 51 views

Calculate the standard enthalpy change for the reaction in which 6 moles of calcium oxide reacts with 3 moles of carbon dioxide to produce 2 moles of calcium carbonate. The equation for the reaction is:CaO(s) + CO2(g) → CaCO3(s)Given the standard enthalpy of formation values: ΔHf°[CaO(s)] = -635.09 kJ/mol, ΔHf°[CO2(g)] = -393.51 kJ/mol, and ΔHf°[CaCO3(s)] = -1207.44 kJ/mol.

asked Feb 3 in Chemical thermodynamics by SharonMendis (2.0k points)

0 votes

1 answer 96 views

Calculate the standard enthalpy change for the reaction in which 50.0 mL of 1.0 M HCl is mixed with 50.0 mL of 1.0 M NaOH in a constant pressure calorimeter using the following data: the temperature of the HCl and NaOH solutions are both initially 25.0 °C, and the temperature of the mixture increases to 32.0 °C. The specific heat of the solution is 4.18 J/(g·°C) and the density of the solution is 1.00 g/mL. The reaction is: HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)

asked Feb 3 in Chemical thermodynamics by ArlenBieber1 (1.9k points)

0 votes

1 answer 63 views

Calculate the standard enthalpy change for the reaction in which 50.0 mL 0.20 M HCl(aq) is mixed with 50.0 mL 0.10 M NaOH(aq) in a constant pressure calorimeter. Given that the density of both the solutions is 1.00 g/mL and the specific heat capacity of the mixture is 4.18 J/g°C. Assume the temperature change to be negligible.

asked Feb 3 in Chemical thermodynamics by TraceeKeith9 (1.8k points)

0 votes

1 answer 65 views

Calculate the standard enthalpy change for the reaction in which 50 mL of 1.0 M HCl(aq) is added to 50 mL of 1.0 M NaOH(aq) at 25°C, given that the solution's specific heat capacity is 4.18 J g⁻¹ K⁻¹ and the density is 1.00 g/mL.

asked Feb 3 in Chemical thermodynamics by BradlySyr093 (1.8k points)

0 votes

1 answer 83 views

Calculate the standard enthalpy change for the reaction in which 25.0 mL of 0.100 M HCl(aq) is mixed with 25.0 mL of 0.200 M NaOH(aq) at 25°C. Assume that the specific heat capacity of the solution is 4.18 J/g⋅°C and that the density of both solutions is 1.00 g/mL.

asked Feb 3 in Chemical thermodynamics by CassieClopto (2.4k points)

0 votes

1 answer 87 views

Calculate the standard enthalpy change for the reaction between methane and oxygen to form carbon dioxide and water vapor at 298 K and 1 atm of pressure, given the following reaction equation:CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)The standard enthalpies of formation for CH4(g), CO2(g), and H2O(g) are -74.8 kJ/mol, -393.5 kJ/mol, and -241.8 kJ/mol, respectively.

asked Feb 3 in Chemical thermodynamics by RemonaRainey (1.6k points)

0 votes

1 answer 71 views

Calculate the standard enthalpy change for the reaction between hydrochloric acid and potassium hydroxide to produce potassium chloride and water, given that the heat of neutralization of hydrochloric acid and sodium hydroxide is -57.1 kJ/mol.

asked Feb 3 in Chemical thermodynamics by IvyHogan8844 (1.6k points)

0 votes

1 answer 68 views

Calculate the standard enthalpy change for the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH) to form sodium chloride (NaCl) and water (H2O), given the following information:- Heat capacity of the solution = 4.18 J/g°C- Volume of the solution = 50 mL- Concentration of HCl = 0.25 M- Concentration of NaOH = 0.10 M

asked Feb 3 in Chemical thermodynamics by MarcyVallejo (2.2k points)

0 votes

1 answer 76 views

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 Feb 3 in Chemical thermodynamics by VioletteM27 (2.1k points)

0 votes

1 answer 75 views

Calculate the standard enthalpy change for the reaction between hydrochloric acid (HCl) and ammonia (NH3) to produce ammonium chloride (NH4Cl) if the reaction is carried out in a solution of water (H2O), given the following information:HCl(aq) + H2O(l) -> H3O+(aq) + Cl-(aq) ΔH1 = -74.8 kJ/mol NH3(aq) + H2O(l) ⇌ NH4+(aq) + OH-(aq) ΔH2 = -51.8 kJ/mol NH4Cl(s) → NH4+(aq) + Cl-(aq) ΔH3 = 15.2 kJ/mol Ensure that the answer is in kJ/mol.

asked Feb 3 in Chemical thermodynamics by BarbraBelang (2.1k points)

0 votes

1 answer 65 views

Calculate the standard enthalpy change for the reaction between calcium oxide (CaO) and water (H2O) to form calcium hydroxide (Ca(OH)2), given that all species are in their standard state and that the balanced chemical equation is:CaO(s) + H2O(l) → Ca(OH)2(s)The standard enthalpies of formation of CaO(s), H2O(l) and Ca(OH)2(s) are -635.1 kJ/mol, -285.8 kJ/mol, and -986.2 kJ/mol respectively.

asked Feb 3 in Chemical thermodynamics by Katja04J6453 (1.8k points)

0 votes

1 answer 48 views

Calculate the standard enthalpy change for the reaction between Aquapentamminecobalt(III) chloride and sodium hydroxide to form Aquapentamminecobalt(III) hydroxide and sodium chloride if the initial concentration of Co(NH3)5Cl3 is 0.1 M and the reaction takes place at 25°C.

asked Feb 3 in Chemical thermodynamics by ImaSimmons79 (2.3k points)

0 votes

1 answer 58 views

Calculate the standard enthalpy change for the reaction between 50.0 mL of 0.200 M HCl(aq) and 50.0 mL of 0.300 M NaOH(aq) at 25°C. The heat capacity of the calorimeter is 9.60 J/°C and the temperature change observed is 4.00°C. Also, assume that the density of both solutions is 1.00 g/mL and that the heat capacity and density of the final solution are the same as that of water.

asked Feb 3 in Chemical thermodynamics by FionaGreenbe (1.8k points)

0 votes

1 answer 69 views

Calculate the standard enthalpy change for the reaction between 50 mL of 1.0 M HCl and 50 mL of 1.0 M NaOH at 25°C given that the temperature of the resultant solution is 31.2°C and the specific heat capacity of the solution is 4.184 J/g°C.

asked Feb 3 in Chemical thermodynamics by LuzGerste41 (1.9k points)

0 votes

1 answer 70 views

Calculate the standard enthalpy change for the reaction between 50 ml of 0.2 M HCl (aq) and 50 ml of 0.2 M NaOH (aq) at 25°C, given that the specific heat capacity of the combined solution is 4.18 J/g °C and the density of the combined solution is 1.0 g/mL.

asked Feb 3 in Chemical thermodynamics by SelinaOmar8 (2.0k points)

0 votes

1 answer 85 views

Calculate the standard enthalpy change for the reaction between 25 mL of 0.1 M HCl and 25 mL of 0.1 M NaOH, assuming the reaction takes place in aqueous solution and is complete. The temperature of the solutions should be maintained at a constant 25°C during the reaction. (Assume the density of the solutions is 1 g/mL and the specific heat capacity of the solutions is 4.18 J/g°C).

asked Feb 3 in Chemical thermodynamics by DieterSchrod (1.9k points)

0 votes

1 answer 73 views

Calculate the standard enthalpy change for the reaction between 2.00 moles of liquid ethanol (C2H5OH) and 3.50 moles of gaseous oxygen (O2) to form carbon dioxide (CO2) gas and liquid water (H2O) at 25°C and standard pressure. The balanced chemical equation for the reaction is C2H5OH + 3O2 → 2CO2 + 3H2O. (The molar enthalpies of formation for C2H5OH, CO2, and H2O are -277.6 kJ/mol, -393.5 kJ/mol, and -285.8 kJ/mol, respectively.)

asked Feb 3 in Chemical thermodynamics by KianCavill6 (1.6k points)

0 votes

1 answer 59 views

Calculate the standard enthalpy change for the reaction between [Fe(H2O)6]2+ and 2Cl- ions to produce [FeCl4]2- complex ion given that the enthalpy of formation for [FeCl4]2- is -392 kJ/mol and the enthalpies of hydration for Fe2+ and Cl- ions are -340 kJ/mol and -381 kJ/mol, respectively.

asked Feb 3 in Chemical thermodynamics by Osvaldo14767 (1.8k points)

0 votes

1 answer 63 views

Calculate the standard enthalpy change for the reaction between [Co(en)2Cl2]Cl and NaNO2 to form [Co(en)2(NO2)2]Cl and NaCl, given the following information: [Co(en)2Cl2]Cl and [Co(en)2(NO2)2]Cl have a ΔHf° of -288 kJ/mol and -136 kJ/mol, respectively. The ΔHf° of NaNO2 and NaCl are -463.2 kJ/mol and -411.2 kJ/mol, respectively. Assume that the reaction is conducted at a constant pressure and temperature of 298 K.

asked Feb 3 in Chemical thermodynamics by YQYFlora9901 (1.9k points)

Page:

« prev
1
...
12
13
14
15
16
17
18
19
20
...
28
next »

Recent questions in Chemical thermodynamics

Categories