Question

Refer diagram and Match List-1 with List-2.

Answer 1

$Ea\left(f\right)=(50-20)KJ/mol$

$Ea\left(f\right)=30KJmo{l}^{-1}$

$Ea\left(b\right)=(50-10)KJ/mol$

$Ea\left(b\right)=40KJmo{l}^{-1}$

${△}_{r}H=Ea\left(f\right)-Ea\left(b\right)=(30-40)KJ/mol=-10KJ/mol$

Threshold energy $=50KJ/mol$