Question

Question: Fully explain the correct answer.

-I don’t know how to explain the reason that is Exothermic. HELP MEEE PLEASE!!!!

Equilibrium Concentrations and K Mixture [FeNCS2*] (M) [KSCN] (M) [Fe(NO3)al (M) K (M) Try 1: 0.0000140 Try 1: 0.000106 Try 1:0.000986 Try 1: 134 You (Volume 1) Try 1: X 0.000302 Try 2: 0.0000302 Try 1: / 0,000289 Try 1: 0.000969 Try 1:/ 108 You (Volume 2) 0.75 1 Try 1: X 0000923 Try 2: V0.000243 Try 1: /0.0000772 Try 1: V0,000923 Try 1:V 344 You (Volume 2 Chilled) Try 1: V 0.0000113 Try 1: V 0.0007 49 Try 1: 0.000989 Try 1: V 153 Partner (Volume 1) Try 1: 0.0000386 Try 1: V0.000901 Try 1: V 0.000961 Try 1: 44.6 Partner (Volume 2) try 1: V 755s Average K, (excluding the chilled mixture)

Answer 1

The reaction is exothermic. The reasoning is simple. All the equilibrium constant calculated for this reaction is greater than 1. Now the relation between Gibbs free energy change $\Delta G$ and equilibrium constant K is given by the following equation

$\Delta G = -RTlnK$

Where R is universal gas constant and T is temperature. If the value of K >1 then lnK must be a positive quantity. So $\Delta G$ will be negative. A negative change in Gibbs free energy indicates that the reaction is exothermic or releases heat.