A chemist attempts to prepare some very pure crystals of borax (sodium tetraborate, Na2B4O7 10 H2O) by dissolving 100 g of Na2B4O7 in 200 g of boiling water. He then carefully cools the solution slowly until some Na2B4O7 10 H2O crystallizes out. Calculate the grams of Na2B4O7 10 H2O recovered in the crystals per 100 g of total initial solution (Na2B4O7 plus H2O), if the residual solution at 55°C after the crystals are removed contains 12.4% Na2B4O7.
A chemist attempts to prepare some very pure crystals of borax (sodium tetraborate, Na2B4O7 10 H2O) by dissolving 100 g of Na2B4O7 in 200 g of boiling water. He then carefully cools the solution slowly until some Na2B4O7 10 H2O crystallizes out. Calculate the grams of Na2B4O7 10 H2O recovered in the crystals per 100 g of total initial solution (Na2B4O7 plus H2O), if the residual solution at 55°C after the crystals are removed contains 12.4% Na2B4O7.
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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A chemist attempts to prepare some very pure crystals of borax (sodium tetraborate, Na2B4O7 10 H2O) by dissolving 100 g of Na2B4O7 in 200 g of boiling water. He then carefully cools the solution slowly until some Na2B4O7 10 H2O crystallizes out. Calculate the grams of Na2B4O7 10 H2O recovered in the crystals per 100 g of total initial solution (Na2B4O7 plus H2O), if the residual solution at 55°C after the crystals are removed contains 12.4% Na2B4O7.
Transcribed Image Text:6. A chemist attempts to prepare some very pure crystals of borax (sodium tetraborate,
Na₂B4O7 10 H₂O) by dissolving 100 g of Na₂B4O, in 200 g of boiling water. He then
carefully cools the solution slowly until some Na₂B407 10 H₂O crystallizes out. Calculate
the grams of Na₂B4O, 10 H₂O recovered in the crystals per 100 g of total initial solution
(Na₂B4O7 plus H₂O), if the residual solution at 55°C after the crystals are removed
contains 12.4% Na₂B4O7.
Hint: Treat the hydrated crystals as a separate stream leaving the process.
.
.
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