The term energy spread, and matter spread should be explained as driving forces in the chemical reactions . Concept Introduction: The whole content in the universe can be categorized as energy and matter. The main difference is that the matter can be physically observable and touched whereas the energy is not. Any process that occurs in the world would associate the interaction of energy with matter. Observation of certain processes have led the scientists to figure out a certain trend during these interactions that would make processes spontaneously possible.

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Q2. Consider the hydrogenation of ethylene C2H4 + H2 = C2H6 The heats of combustion and molar entropies for the three gases at 298 K are given by: C2H4 C2H6 H2 AH comb/kJ mol‍¹ -1395 -1550 -243 Sº / J K¹ mol-1 220.7 230.4 131.1 The average heat capacity change, ACP, for the reaction over the temperature range 298-1000 K is 10.9 J K¹ mol¹. Using these data, determine: (a) the standard enthalpy change at 800 K (b) the standard entropy change at 800 K (c) the equilibrium constant at 800 K.

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Chapter 10, Problem 60QAP

Interpretation Introduction

Interpretation:

The term energy spread, and matter spread should be explained as driving forces in the chemical reactions.

Concept Introduction:

The whole content in the universe can be categorized as energy and matter. The main difference is that the matter can be physically observable and touched whereas the energy is not. Any process that occurs in the world would associate the interaction of energy with matter. Observation of certain processes have led the scientists to figure out a certain trend during these interactions that would make processes spontaneously possible.

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Q2. Consider the hydrogenation of ethylene C2H4 + H2 = C2H6 The heats of combustion and molar entropies for the three gases at 298 K are given by: C2H4 C2H6 H2 AH comb/kJ mol‍¹ -1395 -1550 -243 Sº / J K¹ mol-1 220.7 230.4 131.1 The average heat capacity change, ACP, for the reaction over the temperature range 298-1000 K is 10.9 J K¹ mol¹. Using these data, determine: (a) the standard enthalpy change at 800 K (b) the standard entropy change at 800 K (c) the equilibrium constant at 800 K.

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