Homework SourseWhen the G of a chemical reaction is positive under standard
When the G° of a chemical reaction is positive under standard conditions:
When the G° of a chemical reaction is positive under standard conditions:
| A-reactants and products are at equilibrium |
| B-reactants predominate over products |
| C-the reaction is spontaneous |
| D-not enough information to determine the answer |
| E-work can be done under these conditions |
Solution
B. reactants predominant over products
the reason is for a reaction to be spontaneous the gibbs free energy must be negative thus the change in enthalpy will be negative thus heat will be released in formation of a product from a reactant. thus leading to heat release and increase in spontaneity.
and for a reaction to be at equilibrium the change in gibbs free energy must be 0
the positive value indicates that the reaction absorbs heat and decreases spontaenity
