2) Phosphorus trihydride (PH3) is a chemical compound that is isoelectronic with ammonia (NH3). It is a precursor in the synthesis of a variety of organophosphorus compounds that are used as insecticides and pesticides. PH3 can be formed by the following reaction: P.(g) + 6 H2(g) 5 4 PH:(g) (2.1) a) Give the expression for K, the thermodynamic equilibrium constant for the above reaction. b) Using the information below, find the numerical value for K for the above reaction. Assume T = 25. °C, the temperature at which the thermodynamic data are given. substance AH°; (kJ/mol) AG°: (kJ/mol) S° (J/mol·K) H2(g) P.(g) PH:(g) 0.0 58.9 5.4 0.0 130.6 279.9 24.5 13.4 210.1 c) If the temperature is increased to T = 50.0 °C, will the numerical value for K increase, decrease, or stay the same? Briefly justify your answer.

2) Phosphorus trihydride (PH3) is a chemical compound that is isoelectronic with ammonia (NH3). It is a precursor in the synthesis of a variety of organophosphorus compounds that are used as insecticides and pesticides. PH3 can be formed by the following reaction: P.(g) + 6 H2(g) 5 4 PH:(g) (2.1) a) Give the expression for K, the thermodynamic equilibrium constant for the above reaction. b) Using the information below, find the numerical value for K for the above reaction. Assume T = 25. °C, the temperature at which the thermodynamic data are given. substance AH°; (kJ/mol) AG°: (kJ/mol) S° (J/mol·K) H2(g) P.(g) PH:(g) 0.0 58.9 5.4 0.0 130.6 279.9 24.5 13.4 210.1 c) If the temperature is increased to T = 50.0 °C, will the numerical value for K increase, decrease, or stay the same? Briefly justify your answer.

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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