For independent process at 300 K . Process Δ H / kJmol - 1 Δ S / JK - 1 A - 25 - 80 B - 22 40 C 25 - 50 D 22 20 The number of non-spontaneous process from the following is _____ .

Step-by-step solution

The relation between change in Gibbs free energy, change in enthalpy and change in entropy can be written as follows, ΔG = ΔH - TΔS If ∆ G is + ve , then the process is said to be non-spontaneous and if ∆ G is - ve then the process is said to be spontaneous. A : ΔG Jmol - 1 = - 25 × 10 3 + 80 × 300 : - ve B : ΔG Jmol - 1 = - 22 × 10 3 - 40 × 300 : - ve C : ΔG Jmol - 1 = 25 × 10 3 + 300 × 50 ; + ve D : ΔG Jmol - 1 = 22 × 10 3 - 20 &#21