Briefly describe the contribution of Walter Nernst, T. W . Richards, Max Planck and G.N. Lewis in the development of the third law of thermodynamics.

Q: Use the molar bond enthalpy data in the table to estimate the value of AHixn for the equation NH,…

A: The given chemical reaction is:-    Average molar bond enthalpies (in KJ.mol-1) :…

Q: Write down a chemical equation for which the enthalpy of the reaction is identical to the molar…

A: Enthalpy of formation is the enthalpy when 1 mole of product is formed by its constituent elements.

Q: The net change in the multistep biochemical process of photosynthesis is that CO₂ and H₂O form…

A: Biochemical processes refer to the chemical processes which occur in living organisms. It gives…

Q: Can the heat capacity of water be assumed when calculating the heat capacity of an unknown metal or…

A: The amount of heat absorbed (or released) by a fixed amount of a substance to change its temperature…

Q: Suggest some ways in which the calorimeter or lab protocol could be improved to have lower…

A: The device which is used to determine the enthalpy change of a chemical reaction is known as…

Q: (i) Identify the different enthalpy changes and construct the Born-Haber cycle for the formation of…

A:

Q: 4NH3(g) + O2(g) → 2N2(g) + 6H2O(g)          ΔrH = -1267 kJmol-1  2NO(g) + O­2(g) → 2NO2(g)     ΔrH…

A: For a chemical reaction to be spontaneous, Gibbs free energy, ∆rG should be negative. ∆rG is…

Q: Consider an electron and a proton that are separated by 230 pm. What is the electrostatic potential…

A: Given data:  Distance d = 230 pm Formula used: Eelectrostatic=KQ1Q2d

Q: 8 SO,(9) + 16 H,S(9)→3 Sg(s) + 16 H,0(1) AH=-1863. kJ Use this information to complete the table…

A: given reaction, the enthalpy change is 8 SO2 (g) + 16H2S(g) → 3S8(s) + 16H2O(l), ΔH = -1863. KJ    -…

Q: Use Hess's law to calculate the enthalpy of the reaction... N2H4 + H2 -> 2 NH3 AH =? Using the…

A:

Q: Two positively charged spheres, each with a charge of 2.0x 10-5 C, a mass of 1.0 kg, and separated…

A: (a) Electrostatic potential is a result of Coulomb forces and it is a potential energy which is…

Q: Decide how the sketches below would be listed, if they were listed in order of decreasing potential…

A: The detailed solution of your question given below- The potential energy of any system is directly…

Q: 2.8 A sample of the sugar D-ribose (C;H1,05) of mass 0.727 g was placed in a calorimeter and then…

A: The energy of combustion and enthalpy of formation of D-ribose is calculated below:

Q: Given these reactions, where X represents a generic metal or metalloid 1) H, (g) + 0,(g) → H,O(g)…

A: Given,

Q: What is the energy of one mole of photons having a wavelength of 550 nm and also find 2.045 g of a…

A: Given data Wavelength of photon =550 nm And for Combustion of C9H8O2  mass = 2.045 g Initial…

Q: [Review Topics] [References] The complete combustion of acetylene, C₂H₂ (g), produces 1300. k) of…

A: Energy per mole = 1300 kJ Density = 1 g/cm3 Efficiency = 81.9 % Volume = 1.08 gal Temperature rise =…

Q: Construct a Born-Haber cycle for Ga (s) + Cl2(g) → GaCl3(s) and calculate the enthalpy of formation…

A:

Q: Ammonia reacts with oxygen to form nitrogen dioxide and steam, as follows: 4 NH3 (g) + 7 O2 (g) → 4…

A:

Q: Consider the following two reactions and the corresponding enthalpy changes: CH4(g) +2 O2(g)→…

A:

Q: Write the chemical equation for the standard molar enthalpy of formation of ammonium perchlorate,…

A: the equation is provided in the next step:

Q: Given that the reaction N2(g) + 2 O2(g) → 2 NO2(g) is endothermic, what is true of the reaction 2…

A:

Q: Benzoic acid of mass 1.35 g is reacted with oxygen in a constant volume calorimeter to form H20(1)…

A: The calorimeter constant can be calculated as shown in the following steps

Q: Decide how the sketches below would be listed, if they were listed in order of decreasing potential…

A: The potential energy of a system of charges can be given as : P.E=kq1q2rHere k is the electrostatic…

Q: Given: 2NH3(g) + 3N20(g) → 4N2(g) + 3H20(1) ....AH1 = -1010 kJ 4NH3(g) + 302(g) → 2N2(g) + 6H2O(1)…

A:

Q: How much energy is required to break the bonds in the molecule of NO, BCl3, and NO2?  and How do I…

A: By the estimate of the enthalpy of reaction by looking at the individual bonds involved. If we know…

Q: One mole of a gas expands from a volume of 6 liters and a temperature of 273K to a volume of 13…

A: The corresponding formula to solve this problem will-Work done = - ∆P ×∆V                    = -…

Q: 6. The oxidation of methylhydrazine, N,H,CH,(), by dinitrogen tetroxide, N,0,(1), was used for…

A:

Q: 8. What is the symbol for energy/heat flow in the field of thermochemistry? O Hf E H

A: It is the enthalpy that denotes heat in thermochemistry.

Q: Identify the overall reaction. M²*(g) + 2X¯(g) – MX,(s) M(s) + X,(g) - MX,(s) M(s) + 2X(g) → MX,(s)…

A: We need to write the name of energy involved in each step and hence the overall reaction.