10 kg of liquid water at 0.01degree C, 4 kg ice at 0.01degree C and 20 kg of dry

Question

10 kg of liquid water at 0.01degree C, 4 kg ice at 0.01degree C and 20 kg of dry saturated steam at 120.23degree C are mixed under adiabatic conditions in a sealed vessel. If the system is allowed to reach thermal equilibrium find a) the final temperature and pressure of the system b) how much steam has been condensed? 6) Weak aqueous Sulphuric Acid (73% w/w) is to be concentrated to 93% w/w acid by spraying into hot flue gas at 1 bar pressure so that the excess water evaporates. The flue gas is obtained by the complete combustion, with the stoichiometric amount of air, of a fuel gas of overall composition (CH)_3. Sketch a diagram of the process and then calculate the mass of fuel gas required per kg of concentrated acid produced neglecting heat losses from the concentrator. Data for Acid Data for Flue Gas

Explanation / Answer

The final temperature and pressure of the system
Ans: 113.3 degree centigrade and 1.60 bar
b) How much steam has been condensed
Ans: 3.774kg
6) Data for acid
0.0967 kgfuel/ kg acid product

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