For the reaction 2Cl(g) arrow Cl2(g), the correct option is:

Question

For the reaction 2Cl(g) arrow Cl2(g), the correct option is: (A) Δr H > 0 and ΔrS > 0 (B) Δr H > 0 and ΔrS < 0 (C) Δr H < 0 and ΔrS > 0 (D) Δr H < 0 and Δr S < 0

Tardigrade Admin · Accepted Answer

2 C l(g) longrightarrow C l2(g) As the process involves bond formation Δ H=-v e and as the number of gaseous particles are decreasing in the reaction Δ S is also -v e i.e., Δr H< 0 and Δr S< 0

Q. For the reaction $2 Cl (g) \to C l_{2} (g)$ , the correct option is:

$Δ_{r} H > 0$ and $Δ_{r} S > 0$

$Δ_{r} H > 0$ and $Δ_{r} S < 0$

$Δ_{r} H < 0$ and $Δ_{r} S > 0$

$Δ_{r} H < 0$ and $Δ_{r} S < 0$

$2 Cl (g) ⟶ C l_{2} (g)$
As the process involves bond formation $Δ H = - v e$ and as the number of gaseous particles are decreasing in the reaction $Δ S$ is also $- v e$
i.e., $Δ_{r} H < 0$ and $Δ_{r} S < 0$

Q. For the reaction 2Cl(g)→Cl2​(g), the correct option is:

Δr​H>0 and Δr​S>0

Δr​H>0 and Δr​S<0

Δr​H<0 and Δr​S>0

Δr​H<0 and Δr​S<0