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One hundred fifty k mol of an aqueous phosphoric acid solution contains 5.00 mole% H3PO4. The solution is concentrated by adding pure phosphoric acid at a rate of 20.0 L/min.
(a) Write a differential mole balance on phosphoric acid and provide an initial condition. [Start by defining np (k mol) to be the total quantity of phosphoric acid in the tank at any time.]
(b) Solve the balance to obtain an expression for np (t). Use the result to derive an expression for x(t), the mole fraction of phosphoric acid in the solution.
(c) How long will it take to concentrate the solution to 15% H3PO4?
The left side of of the mechanical energy equation has three terms: P/p, (1/2)av^2 and gz. show that each of these terms has the dimension of energy per mass of fluid by....a) converting each term to units of Btu/lbm beginning with pressure in psi, d..
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A fresh feed stream containing 4.0 mol% inert gas and a stoichiometric ratio of hydrogen and nitrogen is combined with a recycle stream and is fed to a system to produce ammonia according to the reaction: N2 + 3H2 = 2NH3
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In a process to produce 1000 kgmol/h acetaldehyde, ethane is fed to the reactor at 1500 kgmol/h and the fractional conversion is 0.8. The product stream contains 2 mol% CO2. Calculate the molar composition of the product stream and the fractional sel..
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