A sample of biphenyl (C6H5)2 weighing 0.526 g was ignited in a bomb calorimeter initially at 25°C, producing a temperature rise of 1.9K. In a separate calibration experiment, a sample of benzoic acid C6H5COOH weighing 0.825 g was ignited under identical conditions and produced the same temperature rise of 1.9K. For benzoic acid, the heat of combustion at constant pressure is known to be 3226 kJ mol–1 (that is, ΔU = –3226 kJ mol–1.). Temperature was measured with ±0.1K accuracy Use this information to determine the standard enthalpy of combustion of biphenyl with error of the calculated enthalpy of biphenyl combustion

Q: Liquid ethanol (C2H5OH) at 25°C, 1 atm enters an insulated reactor operating at steady state and…

A: Given : Ethanol  is completely burned, so its conversion rate is 100%.The flue gas analysis…

Q: 2. Draw an appropriate process path diagram for each of the two chemical systems undergoing…

A: Step 1:Step 2:Step 3:

Q: steady-flow process.

A:

Q: As we discussed in class, although low temperatures favor the formation of ammonia in Haber process,…

A: Ammonia is produced with the help of Haber's process. Temperature of the system = 450CNote: The…

Q: A feed mixture of 40% methanol and 60% ethanol is subject to flash distillation at 1atm. The feed…

A: Given :A feed mixture of 40% methanol and 60% ethanol is subject to flash distillationPressure

Q: Liquid octane at 25°C and 0,1MPa is burned in 96% theoretical air at 25°C. The exit temperature is…

A:

Q: Galvanized steel roofing is becoming more common, and the emissivity of this material is about 0.13…

A:

Q: A fuel with a molar composition of 75% CH4 and 25% C2H6 enters a burner with an excess of 80% air…

A:

Q: You are tasked with investigating the process of converting 10 moles of ice at -5°C and 1 atm to…

A:

Introduction and Basic Calculations in Multiphase Systems

Chemical calculations involve material and energy balance calculations which enable engineers to calculate material and energy requirements in various chemical processes. In addition to this, chemical calculations help to study the behavior and properties of gases, liquids, and their mixtures.