chemical engineering Please answer your problems neatly and list all values you
ID: 891446 • Letter: C
Question
chemical engineering Please answer your problems neatly and list all values you need to solve the problem. Answer the following question for 3 liquids. Hexane ,water ,and ammonia. You have a hot plate that can heat a 1 L container of liquids at 5kJ/s , how long will it take to evaporate all the liquid? Make a plot of temperature verses time and a plot of mass verses time using excel or similar software. (you can neglect the heating of the conitainer and lose of heat to the environment, in other words, it is adiabatic, all the heat is going to heat the liquid and the vapor can just escape the container, so the pressure will not increase) After reading your text book and thev Wikipedia page about state functions, descride in your own words what a state function is. List 12 state functions. Using the equation from class on Wednesday (4,130 fromthev text book , estimate the heat of vaporization for ethanol at 102 degrees C is this higher or lower than its normal boiling point? What is the reason it is higher or lower?Explanation / Answer
2) A state function is a property whose value does not depend on the path taken to reach that specific value. For compounds or chemical reactions, "state" refers to temperature, pressure and the amount of the substance. Once the state has been established, state functions can be defined. If the property or value is not affected by the path to establish, then it is a state function.
Therefore, state functions can be summarized as a property that is independent of the path taken, can be integrated using initial and final values, multiple steps result in same value, based on the state if the system (temperature, pressure and the amount of the substance of the system).
Some state functions are mass(m), density (d), enthalpy (H), internal energy (U), temperature(T), volume(V), pressure(P), entropy(S), Gibbs free energy (G), fugacity, specific volume(v), particle number (n), etc.
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