Given the values of ΔHorxn, ΔSorxn, and T below, determine ΔSuniv. ΔHorxn= -95 kJ ,...

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Question

Given the values of ΔHorxn, ΔSorxn, and T below, determine ΔSuniv. ΔHorxn= -95 kJ ,...

Given the values of ΔH^o_rxn, ΔS^o_rxn, and T below, determine ΔS_univ.

ΔH^o_rxn= -95 kJ , ΔS^o_rxn= -157 J/K , T= 855 K

(HINT: Use the equation on page 876, $LaTeX: \Delta$ ΔS_univ = $LaTeX: \Delta$ ΔS - $LaTeX: \Delta$ ΔH / T ).

Group of answer choices

-45.9 J/K

-111.1 J/K

-157 J/K

+238.7 J/K

-268.11 J/K

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Answer 1

Answer #1

Given:

ΔH = -95 KJ

= -9.5*10^4 J

T = 855 K

use:

ΔS Surr = -ΔH/T

= -(-9.5*10^4)/855

= 1.111*10^2 J/K

ΔSuniv = ΔS Sys + ΔS Surr

= -157 J/K + 1.111*10^2 J/K

= -45.89 J/K

Answer: -45.9 J/K

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Answer 2

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Given the values of ΔHorxn, ΔSorxn, and T below, determine ΔSuniv. ΔHorxn= -95 kJ ,...