Practice question

Question

The standard free energy changes for conversion of phosphoenol pyruvate (𝑃𝐸𝑃) to pyruvate, and 𝐴𝑇𝑃 synthesis are shown below. The starting concentrations of 𝑃𝐸𝑃, 𝐴𝐷𝑃, 𝑝𝑦𝑟𝑢𝑣𝑎𝑡𝑒, and 𝐴𝑇𝑃 are 25, 25, 50, and 50 𝑚𝑀, respectively. The value of universal gas constant (R) is 8.315 𝐽 ∙ 𝑚𝑜𝑙 ⁻¹ k ⁻¹ The actual free energy change in 𝑘𝐽 ∙ 𝑚𝑜𝑙 ⁻¹ for the reaction 𝑃𝐸𝑃 + 𝐴𝐷𝑃 → 𝑝𝑦𝑟𝑢𝑣𝑎𝑡𝑒 + 𝐴𝑇𝑃 carried out at 37 ℃ will be _____ (rounded off to one place of decimal). (NAT)