17.2P(s) + 3H2(g) → 2PH3(g)AH°rxn = +11 kJclassify:The reaction isthermic, heat flowsthe bonds between the atoms becomeerIn a reaction mixture of 16 grams of P and 1.4 grams of H2:significant figures!The 16 grams of P are enough to formgrams of PH3The 1.4 grams of H2 are enough to formgrams of PH3The limiting reagent in the mixture isThe theoretical yield of PH3 isgIf 10.1 grams of PH3 was isolated, the percent reaction yield isThe most heat that can occur in this reaction mixture iskJ

The given reaction is, 2P (s) +3H2 (g)→ 2PH3 (g)The reaction is endothermic, heat flows between the bonds, are weaker. ∆H is positive. Heat absorb, therefore the reaction is endothermic. Calculation : 16 g of phosphorus enough to reduces =2×342×31×16 g of PH3=17.55 g of PH3=17.6 g of PH3 1.4 g of H2 enough to produce =1.4 g×2×342×3=15.9 g of PH3 Theoretical yield =15.9 g of PH3Practical yield =10.1 g of PH3Percent yield=10.115.9×100=63.5%Therefore, 15.9 g of PH3 =11×15.92×34=2.6 KJ

Answered: ical yield of PH3 is

Science

Chemistry

ical yield of PH3 is

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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