Elementary Principles of Chemical Processes, Binder Ready Version

4th Edition

ISBN: 9781118431221

Author: Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard

Publisher: WILEY

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Textbook Question

Chapter 4, Problem 4.71P

Solid calcium fluoride (CaF₂) reacts with sulfuric acid to form solid calcium sulfate and gaseous hydrogen fluoride (HF). The HF is then dissolved in water to form hydrofluoric acid. A source of calcium fluoride is fluorite ore containing 96.0 wt% CaF₂ and 4 .OS? SiO₂.

In a typical hydrofluoric acid manufacturing process, fluorite ore is reacted with 93 wtS? aqueous sulfuric acid, supplied 15% in excess of the stoichiometric amount. Ninety-five percent of the ore dissolves in the acid. Some of the HF formed reacts with the dissolved silica in the reaction

6HF + SiO₂(aq) -» H₂SiF₆(s) + 2H₂O(1)

The hydrogen fluoride exiting from the reactor is subsequently dissolved in enough water to produce 60.0 wtS? hydrofluoric acid. Calculate the quantity of fluorite ore needed to produce a metric ton of aqueous hydrofluoric acid. Note: Some of the given data are not needed to solve the problem.

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Chapter 4, Problem 4.70P

Chapter 4, Problem 4.72P

Chapter 4 Solutions

Elementary Principles of Chemical Processes, Binder Ready Version

Ch. 4 - Prob. 4.1P Ch. 4 - Rain is falling on a poorly designed 150-m" flat...Ch. 4 - A liquid-phase chemical reaction A -* B takes...Ch. 4 - A stream consisting of 44.6 mole% benzene and...Ch. 4 - Prob. 4.5P Ch. 4 - A liquid mixture of acetone and water contains 35...Ch. 4 - Prob. 4.7P Ch. 4 - Prob. 4.8P Ch. 4 - Inside a distillation column (see Problem 4.8), a...Ch. 4 - Prob. 4.10P

Ch. 4 - In the production of soybean oil, dried and flaked...Ch. 4 - Prob. 4.12P Ch. 4 - A process is carried out in which a mixture...Ch. 4 - Strawberries contain about 15wt% solids and 85wt%...Ch. 4 - Two streams flow into a 500-gallon tank. The first...Ch. 4 - A fuel distributor supplies four liquid fuels,...Ch. 4 - Prob. 4.17P Ch. 4 - One thousand kilograms per hour of a mixture...Ch. 4 - L-Serine is an amino acid that often is provided...Ch. 4 - A 100 kmol/h stream that is 97 mole% carbon...Ch. 4 - A pharmaceutical product, P, is made in a batch...Ch. 4 - A liquid mixture containing ethanol (55.0 wt%) and...Ch. 4 - A stream of humid air containing 1.50 mole% H2O(v)...Ch. 4 - A liquid mixture contains 60.0 wt% ethanol (E),...Ch. 4 - Certain vegetables and fruits contain plant...Ch. 4 - Two aqueous sulfuric acid solutions containing...Ch. 4 - A paint mixture containing 25.0% of a pigment and...Ch. 4 - In the commercial production of sugar (sucrose),...Ch. 4 - Prob. 4.29P Ch. 4 - A garment to protect the wearer from toxic agents...Ch. 4 - A dilute aqueous solution of H2SO4 (Solution A) is...Ch. 4 - Gas streams containing hydrogen and nitrogen in...Ch. 4 - An artificial kidney is a device that removes...Ch. 4 - The indicator-dilution method is a technique used...Ch. 4 - Prob. 4.35P Ch. 4 - Gas absorption or gas scrubbing is a commonly used...Ch. 4 - The SO2 scrubbing tower described in Problem 4.36...Ch. 4 - Prob. 4.38P Ch. 4 - The hormone estrogen is produced in the ovaries of...Ch. 4 - A liquid mixture containing 30.0mole% benzene (B),...Ch. 4 - Seawater containing 3.50 wt% salt passes through a...Ch. 4 - Inside the column a liquid stream flows downward...Ch. 4 - Prob. 4.43P Ch. 4 - Effluents from metal-finishing plants have the...Ch. 4 - In an absorption tower (or absorber), a gas is...Ch. 4 - In the production of a bean oil, beans containing...Ch. 4 - Boilers are used in most chemical plants to...Ch. 4 - Following is a diagram of the shirt-cleaning...Ch. 4 - A drug (D) is produced in a three-stage extraction...Ch. 4 - Prob. 4.52P Ch. 4 - Ammonia is oxidized to nitric oxide in the...Ch. 4 - Prob. 4.54P Ch. 4 - A stream containing H2S and inert gases and a...Ch. 4 - 436. The reaction between ethylene and hydrogen...Ch. 4 - Prob. 4.57P Ch. 4 - Prob. 4.58P Ch. 4 - Titanium dioxide (TiCb) is used extensively as a...Ch. 4 - Prob. 4.60P Ch. 4 - Prob. 4.61P Ch. 4 - Oxygen consumed by a living organism in aerobic...Ch. 4 - A genetically engineered strain of Escherichia...Ch. 4 - The gas-phase reaction between methanol and acetic...Ch. 4 - Prob. 4.65P Ch. 4 - Prob. 4.66P Ch. 4 - Methane and oxygen react in the presence of a...Ch. 4 - Ethane is chlorinated in a continuous reactor:...Ch. 4 - Ethanol can be produced commercially by the...Ch. 4 - Prob. 4.70P Ch. 4 - Solid calcium fluoride (CaF2) reacts with sulfuric...Ch. 4 - Prob. 4.72P Ch. 4 - Chlorobenzene (C^HsCl), an important solvent and...Ch. 4 - A catalytic reactor is used to produce...Ch. 4 - 4.7'6. Methanol is produced by reacting carbon...Ch. 4 - Methane reacts with chlorine to produce methyl...Ch. 4 - Ethylene oxide is produced by the catalytic...Ch. 4 - Methanol is synthesized from carbon monoxide and...Ch. 4 - The fresh feed to an ammonia production process...Ch. 4 - A gas contains 75.0 wt% methane. 10.0% ethane....Ch. 4 - Five liters of liquid n-hexane and 4 liters of...Ch. 4 - Gasoline, which we will represent as having the...Ch. 4 - Prob. 4.87P Ch. 4 - Natural gas containing a mixture of methane,...Ch. 4 - Propane is burned completely with excess oxygen....Ch. 4 - Prob. 4.91P Ch. 4 - Prob. 4.92P Ch. 4 - Liquid methanol is fed to a space heater at a rate...Ch. 4 - Prob. 4.94P Ch. 4 - Prob. 4.95P Ch. 4 - A fuel oil is analyzed and found to contain 85.0...Ch. 4 - Prob. 4.97P Ch. 4 - Prob. 4.98P Ch. 4 - Prob. 4.99P Ch. 4 - 4.1 (Mt. You have been sent by the Environmental...Ch. 4 - Fuel oils contain primarily organic compounds and...

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