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11) To prepare sulfuric acid at 98% for example, oleum at 20%mass and sulfuric acid at 78%mass are mixed. Calculate the quantity of oleum and sulfuric acid at 78%mass necessary to obtain 1000 kg of sulfuric acid at 98%. 12) Determine the heat generated that needs to be released during this operation to maintain this operation at 25°C. and the increase of temperature knowing that all reactants are at 20°C and knowing that the mass heat capacity of sulfuric acid at 98% is 1.420 J.g.K1. Data at 25°C: So, + H,O H,SO4 (100%) AH =- 1053.4 kJ.kg SO, pur H,SO4 (98%) + H2O AH,= - 315.6 kJ.kg H,SO, pur H,SO, (78%) H,SO, pur + H2O H,SO4 (98%) AH3=-55.2 kJ.kg! H,SO4 (100%)

11) To prepare sulfuric acid at 98% for example, oleum at 20%mass and sulfuric acid at 78%mass are mixed. Calculate the quantity of oleum and sulfuric acid at 78%mass necessary to obtain 1000 kg of sulfuric acid at 98%. 12) Determine the heat generated that needs to be released during this operation to maintain this operation at 25°C. and the increase of temperature knowing that all reactants are at 20°C and knowing that the mass heat capacity of sulfuric acid at 98% is 1.420 J.g.K1. Data at 25°C: So, + H,O H,SO4 (100%) AH =- 1053.4 kJ.kg SO, pur H,SO4 (98%) + H2O AH,= - 315.6 kJ.kg H,SO, pur H,SO, (78%) H,SO, pur + H2O H,SO4 (98%) AH3=-55.2 kJ.kg! H,SO4 (100%)

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
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Hello, in question 11, I did not understand how to make the mass balance to find amounts of h2s2o7 and h2so4 mixtures.
11) To prepare sulfuric acid at 98% for example, oleum at 20%mass and sulfuric acid at 78%mass are mixed. Calculate the quantity of oleum and sulfuric acid at 78%mass necessary to obtain 1000 kg of sulfuric acid at 98%. 12) Determine the heat generated that needs to be released during this operation to maintain this operation at 25°C. and the increase of temperature knowing that all reactants are at 20°C and knowing that the mass heat capacity of sulfuric acid at 98% is 1.420 J.g.K1. Data at 25°C: SO, + H;O H2SO4 (100%) AH =- 1053.4 kJ.kg1 SO; pur H SO4 (98%) + H2O AH,=- 315.6 kJ.kg H,SO, pur H,SO4 (78%) H2SO4 (98%) AH;= - 55.2 kJ.kg H2SO, pur H,SO (100%) + H,O)
Transcribed Image Text:11) To prepare sulfuric acid at 98% for example, oleum at 20%mass and sulfuric acid at 78%mass are mixed. Calculate the quantity of oleum and sulfuric acid at 78%mass necessary to obtain 1000 kg of sulfuric acid at 98%. 12) Determine the heat generated that needs to be released during this operation to maintain this operation at 25°C. and the increase of temperature knowing that all reactants are at 20°C and knowing that the mass heat capacity of sulfuric acid at 98% is 1.420 J.g.K1. Data at 25°C: SO, + H;O H2SO4 (100%) AH =- 1053.4 kJ.kg1 SO; pur H SO4 (98%) + H2O AH,=- 315.6 kJ.kg H,SO, pur H,SO4 (78%) H2SO4 (98%) AH;= - 55.2 kJ.kg H2SO, pur H,SO (100%) + H,O)
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