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1. When ammonium chloride is heated the vapour pressure at 427°C is 6.0 bar. At 459°C...
DO NOT USE REFERENCE VALUES FOR ANY OF THE COMPONENTS. EACH PROBLEM MUCH BE SOLVED FOR USING THE INFORMATION GIVEN. 4) Solid ammonium chloride dissociates according to NH,CI() ► NH (3)+ HCl(e) The dissociation vapor pressureſi.e. Pdissociation = PxH. + PHC) of NH4Cl at 427°C is 608 kPa buta 459°C it has risen to 1115 kPa. Calculate the following: a) The equilibrium constant at 427°C c) The standard enthalpy of reaction A HⓇ and 459°C d) The standard entropy of...
Calculate the change in entropy when one mole of metallic aluminum is heated at one bar pressure from an initial temperature of 25 °C to a final temperature of 750 °C. The molar heat capacities of solid and liquid aluminum at one bar pressure are 29.2 J mol' K and 31.75 J mol' K, respectively. The specific enthalpy of fusion of aluminum at its melting point (660.46 °C) is 396.57 J g! The molar mass of aluminum is 26.98 g...
2. NH3, initially at 25°C and 1 bar, is heated at constant pressure until the volume increases 4 times. The heat capacity of NH3 can be modeled by the expression CP.m (NH3 (g))/J mol-'K' = 25.9+(33 x 10-3K-T a) Determine the final temperature and pressure of the system. b) Calculate the heat per mole for this process, work per mole, AHm, AU, for this process. c) Calculate ASm for the system. d) Calculate AStor for the process and comment on...
One mole of H20( is supercooled to-5.00°C at 1 bar pressure before freezing at that temperature. Calculate ASys, ASum, and ASeotal for this process. Is it spontaneous? CPm (H20, 1)- 75.3 J/mol.K CPm (H20, s)-37.7 J/mol.K AHfusion 6.008 kJ/mol Hint: remember that ASs is computed using q along a reversible path, while ASur is computed using the actual heat transfer during the freezing. For the following equilibrium reaction: Here is an ICE table, starting from no moles of pure 0z...
with explanations thanks A4 The molecular dipole vector is the sum of bond polarities and indicates the direction and extent of polarity on a molecule, the vector arrow points from the net negative domain towards the net positive domain. Identify which ONE of the following molecules has the molecule polarity correctly indicated by the dipole vector H H H H H H H H H H H (A) (B) (C) H H H H H (D) (E) A8 When a...