4. Metallic silver may be obtained from sulfide ores by roasting to sulfates, leaching with water and precipitating with copper. In the diagram below, the material leaving the second separator was found to contain 90% silver and 10% copper. If the reaction goes to 75% completion based on the limiting reagent Ag,SO4, what percentage of excess copper was used? (Based excess on feed to reactor) Basis: 1000 lb of material leaving separator no. 2 Ag,SO, + Cu → Ag + CUSO4 Cuso4 Cu > Ag Ag:SO4 REACTOR S1 S2 > Cu Recycle R: Ag2SO4
4. Metallic silver may be obtained from sulfide ores by roasting to sulfates, leaching with water and precipitating with copper. In the diagram below, the material leaving the second separator was found to contain 90% silver and 10% copper. If the reaction goes to 75% completion based on the limiting reagent Ag,SO4, what percentage of excess copper was used? (Based excess on feed to reactor) Basis: 1000 lb of material leaving separator no. 2 Ag,SO, + Cu → Ag + CUSO4 Cuso4 Cu > Ag Ag:SO4 REACTOR S1 S2 > Cu Recycle R: Ag2SO4
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
Problem 1.1P
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Transcribed Image Text:4. Metallic silver may be obtained from sulfide ores by roasting to sulfates, leaching with water and
precipitating with copper. In the diagram below, the material leaving the second separator was found
to contain 90% silver and 10% copper. If the reaction goes to 75% completion based on the limiting
reagent Ag,SO4, what percentage of excess copper was used? (Based excess on feed to reactor) Basis:
1000 lb of material leaving separator no. 2
Ag, SO, + Cu –→ Ag + CUSO 4
CuSO4
Cu
> Ag
Ag2SO4
S1
S2
REACTOR
> Cu
Recycle
R: Ag2SO4
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