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Feed to a vacuum crystallizer contains 82% urea, o.5% biuret and 17.5% water by weight. In the crystallizer, 50% water is evaporated at 5o °C at which temperature the solubility of urea is 205 g per 100 g water. If the mother liquor is found to contain 1.6% biuret, find the yield of urea crystals and its biuret content.

Feed to a vacuum crystallizer contains 82% urea, o.5% biuret and 17.5% water by weight. In the crystallizer, 50% water is evaporated at 5o °C at which temperature the solubility of urea is 205 g per 100 g water. If the mother liquor is found to contain 1.6% biuret, find the yield of urea crystals and its biuret content.

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
Problem 1.1P
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Feed to a vacuum crystallizer contains 82% urea, o.5% biuret and 17.5% water by weight. In the crystallizer, 50% water is evaporated at 50 °C at which temperature the solubility of urea is 205 g per 100 g water. If the mother liquor is found to contain 1.6% biuret, find the yield of urea crystals and its biuret content.
Transcribed Image Text:Feed to a vacuum crystallizer contains 82% urea, o.5% biuret and 17.5% water by weight. In the crystallizer, 50% water is evaporated at 50 °C at which temperature the solubility of urea is 205 g per 100 g water. If the mother liquor is found to contain 1.6% biuret, find the yield of urea crystals and its biuret content.
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