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In Terms of the Enthalpy of Formation, Which of the Following

Question 44

Multiple Choice

In terms of the enthalpy of formation, which of the following compounds is the most unstable compared to its elements under standard conditions?

A) KCl(s) , $\Delta$ H $In terms of the enthalpy of formation, which of the following compounds is the most unstable compared to its elements under standard conditions? A) KCl(s) , \Delta H = - 435.9 kJ/mol B) PH3(g) , \Delta H = +5.4 kJ/mol C) Fe3O4(s) , \Delta H = - 1117.1 kJ/mol D) NiO(s) , \Delta H = - 239.7 kJ/mol E) ICl(g) , \Delta H = + 17.8 kJ/mol$ = - 435.9 kJ/mol
B) PH₃(g) , $\Delta$ H $In terms of the enthalpy of formation, which of the following compounds is the most unstable compared to its elements under standard conditions? A) KCl(s) , \Delta H = - 435.9 kJ/mol B) PH3(g) , \Delta H = +5.4 kJ/mol C) Fe3O4(s) , \Delta H = - 1117.1 kJ/mol D) NiO(s) , \Delta H = - 239.7 kJ/mol E) ICl(g) , \Delta H = + 17.8 kJ/mol$ = +5.4 kJ/mol
C) Fe₃O₄(s) , $\Delta$ H $In terms of the enthalpy of formation, which of the following compounds is the most unstable compared to its elements under standard conditions? A) KCl(s) , \Delta H = - 435.9 kJ/mol B) PH3(g) , \Delta H = +5.4 kJ/mol C) Fe3O4(s) , \Delta H = - 1117.1 kJ/mol D) NiO(s) , \Delta H = - 239.7 kJ/mol E) ICl(g) , \Delta H = + 17.8 kJ/mol$ = - 1117.1 kJ/mol
D) NiO(s) , $\Delta$ H $In terms of the enthalpy of formation, which of the following compounds is the most unstable compared to its elements under standard conditions? A) KCl(s) , \Delta H = - 435.9 kJ/mol B) PH3(g) , \Delta H = +5.4 kJ/mol C) Fe3O4(s) , \Delta H = - 1117.1 kJ/mol D) NiO(s) , \Delta H = - 239.7 kJ/mol E) ICl(g) , \Delta H = + 17.8 kJ/mol$ = - 239.7 kJ/mol
E) ICl(g) , $\Delta$ H $In terms of the enthalpy of formation, which of the following compounds is the most unstable compared to its elements under standard conditions? A) KCl(s) , \Delta H = - 435.9 kJ/mol B) PH3(g) , \Delta H = +5.4 kJ/mol C) Fe3O4(s) , \Delta H = - 1117.1 kJ/mol D) NiO(s) , \Delta H = - 239.7 kJ/mol E) ICl(g) , \Delta H = + 17.8 kJ/mol$ = + 17.8 kJ/mol