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If all the capturing of energy from the reaction is done through electrical process (non P–V work) then calculate maximum available energy whic... 4 years ago Jaiyush19 jee jee main thermodynamics Boron can undergo the following reactions with the given enthalpy changes: 2B(s) + 3/2O2(g) → B2O3(s); ΔH = -1260 kJ 2B(s) + 3H2(g) → B2H6(g); ΔH = 30 kJ Assume no other reactions are occurring. 4 years ago Jaiyush19 jee jee main thermodynamics The enthalpy of atomisation of CH4 and C2H6 are 360 and 620 kcal mol^-1 respectively. The C – C bond energy is expected to be 4 years ago Jaiyush19 jee jee main thermodynamics The molar enthalpies of combustion of isobutane and n-butane are -2870 kJ mol-1 and –2875 kJ mol^-1 respectively at 298 K and 1 atm. 4 years ago Jaiyush19 jee jee main thermodynamics Which of the following salts should cause maximum cooling when 1 mole of it is dissolved in the same volume of water? 4 years ago Jaiyush19 jee jee main thermodynamics The standard Gibb’s free energy change, ΔG° is related to equilibrium constant, KP as 4 years ago Jaiyush19 jee jee main thermodynamics The favourable conditions for a spontaneous reaction are (a) TΔS > ΔH, ΔH = +ve, ΔS = +ve (b) TΔS > ΔH, ΔH = +ve, ΔS = -ve 4 years ago Jaiyush19 jee jee main thermodynamics The enthalpies of formation of Al2O3 and Cr2O3 are -1596 kJ and -1134 kJ respectively. ΔH for the reaction 2Al + Cr2O3 → 3Cr + Al2O3 is 4 years ago Jaiyush19 jee jee main thermodynamics The enthalpy of hydrogenation of cyclohexene is -119.5 kJ mol^–1. If resonance energy of benzene is -150.4 kJ mol^–1, its enthalpy of hydrogenation would be 4 years ago Jaiyush19 jee jee main thermodynamics One mole of an ideal gas is expanded isothermally and reversibly to half of its initial pressure. ΔS for the process in J K^–1 mol^–1 is 4 years ago Jaiyush19 jee jee main thermodynamics The entropy of a sample of a certain substance increases by 0.836 J K-1 on adding reversibly 0.3344 J of heat at constant temperature. The temperature of the sample is: 4 years ago Jaiyush19 jee jee main thermodynamics A certain reaction is non-spontaneous at 298K. The entropy change during the reaction is 121 JK^–1. Is the reaction is endothermic or exothermic? The minimum value of ΔH for the reaction is 4 years ago Jaiyush19 jee jee main thermodynamics What is the free energy change for the conversion of 1 mole of water into steam at 373.2 K. The heat of vaporization (ΔHv) of water of 373.2 K is 9.1 kcal mol^–1. The entropy change is 25.5 cal/mol deg. 4 years ago Jaiyush19 jee jee main thermodynamics If for a given substance melting point is TB and freezing point is TA, then correct variation shown by, graph between entropy change and temperature is 4 years ago Jaiyush19 jee jee main thermodynamics The enthalpy of neutralisation of NH4OH and CH3COOH is -10.5 kcal mol^–1 and enthalpy of neutralisation of CH3COOH with strong base is -12.5 kcal mol^–1. The enthalpy of ionisation of NH4OH will be 4 years ago Jaiyush19 jee jee main thermodynamics What is Δngas for the combustion of 1 mole of benzene, when both the reactants and the products are at 298 K? 4 years ago Jaiyush19 jee jee main thermodynamics The species which by definition has zero standard molar enthalpy of formation at 298 K is 4 years ago Jaiyush19 jee jee main thermodynamics The enthalpy of the reaction forming PbO according to the following equation is 438 kJ. What heat energy (kJ) is released in formation of 22.3 g PbO(s)? 4 years ago Jaiyush19 jee jee main thermodynamics The (S°) of the following substances are: CH4 (g) 186.2 JK^–1 mol^–1 O2 (g) 205.2 JK^–1 mol^–1 CO2(g) 213.6 JK^–1 mol^–1 H2O(g) 69.9.JK^–1 mol^–1 The entropy change (ΔS°) for the reaction 4 years ago Jaiyush19 jee jee main thermodynamics The molar heat capacity (Cp) of CD2O is 10 cals at 1000 K. The change in entropy associated with cooling of 32 g of CD2O vapour from 1000 K to 100 K at constant pressure will be: (D = deuterium, atomic mass = 2 u) 4 years ago Jaiyush19 jee jee main thermodynamics Page 3 / 5 Prev 1 2 3 4 5 Next Share: Super Globals Requests: Server: Options and Features route: community use_home_url: url: https://eanshub.com/community/ pageid:187 default_groupid: 3 2022 How Can We Help? Δ Home About Us Contact Us Privacy Policy Term of Use Copyright © 2020 Eanshub All Rights Reserved
