Which of these species has a standard enthalpy of formation equal to zero?

Question

Which of these species has a standard enthalpy of formation equal to zero? (A)  F2(g)  (B)  F(g)  (C)  HF(aq)  (D)  F-(aq)

Tardigrade Admin · Accepted Answer

Enthalpy of formation of an elements in its most stable state is called standard enthalpy of formation. It is zero for all elements. F2(g) is the most stable state of fluorine, its enthalpy of formation is zero.

Q. Which of these species has a standard enthalpy of formation equal to zero?

$F_{2} (g)$

$F (g)$

$H F (a q)$

$F^{-} (a q)$

Enthalpy of formation of an elements in its most stable state is called standard enthalpy of formation. It is zero for all elements. $F_{2} (g)$ is the most stable state of fluorine, its enthalpy of formation is zero.

Q. Which of these species has a standard enthalpy of formation equal to zero?

F2​(g)

F(g)

HF(aq)

F−(aq)

Enthalpy of formation of an elements in its most stable state is called standard enthalpy of formation. It is zero for all elements. F2​(g) is the most stable state of fluorine, its enthalpy of formation is zero.

$F_{2} (g)$

$F (g)$

$H F (a q)$

$F^{-} (a q)$

Enthalpy of formation of an elements in its most stable state is called standard enthalpy of formation. It is zero for all elements. $F_{2} (g)$ is the most stable state of fluorine, its enthalpy of formation is zero.