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Students at Gonzaga University were attempting to make barium phosphate by precipitation when mixing solutions of barium chloride and trisodium phosphate: 17 3 BaCl₂ (aq) + 2 Na3PO(aq) → Ba3(PO4)₂(s) + 6 NaCl(aq) FM 208.23 FM 163.94 FM 601.92 In one case, 0.479 g of BaCl, and 0.667 g of Na3PO4 were each dissolved separately in ~50 mL H₂O in beakers. The Na3PO4 solution was poured into the BaCl₂ solution with mixing and the resulting suspension of white powder was digested at 80°C for 30 min to give 0.766 g of white solid after filtration, washing, and air drying.

Students at Gonzaga University were attempting to make barium phosphate by precipitation when mixing solutions of barium chloride and trisodium phosphate: 17 3 BaCl₂ (aq) + 2 Na3PO(aq) → Ba3(PO4)₂(s) + 6 NaCl(aq) FM 208.23 FM 163.94 FM 601.92 In one case, 0.479 g of BaCl, and 0.667 g of Na3PO4 were each dissolved separately in ~50 mL H₂O in beakers. The Na3PO4 solution was poured into the BaCl₂ solution with mixing and the resulting suspension of white powder was digested at 80°C for 30 min to give 0.766 g of white solid after filtration, washing, and air drying.

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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Students at Gonzaga University were attempting to make barium phosphate by precipitation when mixing solutions of barium chloride and trisodium phosphate: 17 3 BaCl₂ (aq) + 2 Na3PO(aq) → Ba3(PO4)₂(s) + 6 NaCl(aq) FM 208.23 FM 163.94 FM 601.92 In one case, 0.479 g of BaCl₂ and 0.667 g of Na3PO4 were each dissolved separately in ~50 mL H₂O in beakers. The Na3PO4 solution was poured into the BaCl₂ solution with mixing and the resulting suspension of white powder was digested at 80°C for 30 min to give 0.766 g of white solid after filtration, washing, and air drying.
Transcribed Image Text:Students at Gonzaga University were attempting to make barium phosphate by precipitation when mixing solutions of barium chloride and trisodium phosphate: 17 3 BaCl₂ (aq) + 2 Na3PO(aq) → Ba3(PO4)₂(s) + 6 NaCl(aq) FM 208.23 FM 163.94 FM 601.92 In one case, 0.479 g of BaCl₂ and 0.667 g of Na3PO4 were each dissolved separately in ~50 mL H₂O in beakers. The Na3PO4 solution was poured into the BaCl₂ solution with mixing and the resulting suspension of white powder was digested at 80°C for 30 min to give 0.766 g of white solid after filtration, washing, and air drying.
Use the gravimetric factor to calculate theoretical yield. theoretical yield: 0.9229 observed yield: Incorrect What is the observed yield (%)? 82.99 Incorrect g %
Transcribed Image Text:Use the gravimetric factor to calculate theoretical yield. theoretical yield: 0.9229 observed yield: Incorrect What is the observed yield (%)? 82.99 Incorrect g %
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X-ray diffraction by the powder identified it not as barium phosphate, but as the mineral phase nabaphite: BaCl,(aq) + NaşPO_(aq) — NaBaPO - 9H,O(s)+2NaCl(aq) Nabaphite What is the theoretical yield of isolated product? theoretical yield: 0.8367 What is the observed % yield of isolated product? observed yield: 91.55 g %
Transcribed Image Text:X-ray diffraction by the powder identified it not as barium phosphate, but as the mineral phase nabaphite: BaCl,(aq) + NaşPO_(aq) — NaBaPO - 9H,O(s)+2NaCl(aq) Nabaphite What is the theoretical yield of isolated product? theoretical yield: 0.8367 What is the observed % yield of isolated product? observed yield: 91.55 g %
When the same procedure was conducted, but digestion was carried out in a sealed Teflon bomb at 105°C for 3 h instead of 80°C for 30 min, 0.361 g of white solid product was collected and identified by X-ray diffraction as Ba, (PO4)₂, not nabaphite. What was the % yield of this product? oberved yield: 39.11 %
Transcribed Image Text:When the same procedure was conducted, but digestion was carried out in a sealed Teflon bomb at 105°C for 3 h instead of 80°C for 30 min, 0.361 g of white solid product was collected and identified by X-ray diffraction as Ba, (PO4)₂, not nabaphite. What was the % yield of this product? oberved yield: 39.11 %
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