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Calculate the standard molar Gibbs energy of neon gas at 298 K.
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- Calculate the change in the molar Gibbs energy of nitrogen gas when its pressure is increasedisothermally from 1.0 atm to 50.0 atm at 298 KCalculate the change in the molar Gibbs energy of a perfect gas when its pressure is increased isothermally from 1.0 atm to 100.0 atm at 298 K.Use the fundamental equation of therodynamics here tocalculate the change Gibbs energy when 3.1 mmol N_2(g) occupying 3.0L at 350 K expandsisothermally to 15 L.
- Without doing a calculation, decide whether the presence of (a) attractive, (b) repulsive interactions between gas molecules will raise or lower the molar Gibbs energy of a gas relative to its 'perfect' value.Calculate (a) the standard reaction entropy and (b) the change in entropyof the surroundings (at 298 K) of the reaction N2(g) + 3 H2(g) → 2 NH3(g). (c) Hence calculate the standard Gibbs energy of the reaction.Estimate the change in the Gibbs energy of 1.0 dm3 of liquid octane when the pressure acting on it is increased from 1.0 atm to 100 atm. Given that the mass density of octane is 0.703 g cm−3, determine the change in the molar Gibbs energy.
- The standard enthalpy of combustion of liquid ethyl ethanoate (ethyl acetate, CH3COOC2H5) is −2231 kJ mol−1 at 298 K and its standard molar entropy is 259.4 J K−1 mol−1. Calculate the standard Gibbs energy of formation of the compound at 298 K.how to calculate the equilibrium constant given Delta Grxn= +6.4kJ/mol at 298KCalculate the standard Gibbs energy of reaction for 4 HI(g) + O2(g) → 2 I2(s) + 2 H2O(l) at 298 K, using the values of standard entropies and enthalpies of formation given in the Resource section.
- Suggest a physical interpretation of the dependence of the Gibbs energy on the pressure.The difference in chemical potential of a particular substance between two regions of a system is +7.1 kJ mol−1. By how much does the Gibbs energy change when 0.10 mmol of that substance is transferred from one region to the other?Estimate the change in the Gibbs energy of 2 g of Argon when the pressure is increased from 760 mmHg to 100. atm at 300K.