150 kmol of an aqueous phosphoric acid solution contains S mol percent H3P04. The solution is concentrated by adding pure phosphoric acid at a rate of 20L per minute. Write a differential mole balance on phosphoric acid and provide an initial condition. Solve the balance to abtain an expression vdor np(t) . Use the result to derive an expression far xp(t), the mole fraction of phosphoric acid in the solution. How long will it take to concentrate the solution to IS percent H3P04 ?

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150 kmol of an aqueous phosphoric acid solution contains S mol percent H3P04. The solution is concentrated by adding pure phosphoric acid at a rate of 20L per minute.
Write a differential mole balance on phosphoric acid and provide an initial condition.
Solve the balance to abtain an expression vdor np(t) . Use the result to derive an expression far xp(t), the mole fraction of phosphoric acid in the solution. How long will it take to concentrate the solution to IS percent H3P04 ?

Assignment No 2.
150 kmol of an aqueous phosphoric acid solution
contains 5 mol percent H3PO4. The solution is
concentrated by adding pure phosphoric acid at a rate
of 20L per minute.
Write a differential mole balance on phosphoric acid
and provide an initial condition.
Solve the balance to abtain an expression vdor np(t).
Use the result to derive an expression for xp(t), the
mole fraction of phosphoric acid in the solution.
How long will it take to concentrate the solution to 15
percent H3PO4 ?
Transcribed Image Text:Assignment No 2. 150 kmol of an aqueous phosphoric acid solution contains 5 mol percent H3PO4. The solution is concentrated by adding pure phosphoric acid at a rate of 20L per minute. Write a differential mole balance on phosphoric acid and provide an initial condition. Solve the balance to abtain an expression vdor np(t). Use the result to derive an expression for xp(t), the mole fraction of phosphoric acid in the solution. How long will it take to concentrate the solution to 15 percent H3PO4 ?
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