Please i need help in the last part. delta H of Cl2 in the appendex is 0 KJ Delt

Question

Please i need help in the last part. delta H of Cl2 in the appendex is 0 KJ

Delta H Delta G S

Phosphorus pentachloride forms from phosphorus trichloride and chlorine: Use data in Appendix B in the textbook to calculate Delta S.sys . Delta S surr . and Delta S total for this reaction. Calculate Delta S total Express your answer using one decimal place. Is the reaction spontaneous under standard-stale conditions at 25 degree C? Estimate the temperature at which the reaction will become nonspontaneous. Express your answer using four significant figures.

Explanation / Answer

for spontainity delta G = delta H - T * delta S > 0

87.9 - T * 124.8 =0

T = 0.7043

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