Which of the following statements is TRUE?:
1. Reaction quotient is the concentration of the products raised to stoichiometric coefficients divided by the concentration of the reactants raised to their stoichiometric coefficients measured at any point in the reaction.
2. Reaction quotient is the concentration of the reactants raised to the stoichiometric coefficients divided by the concentration of the products raised to their stoichiometric coefficients measured at any point in the reaction.
3. Reaction quotient is the concentration of the products raised to the stoichiometric divided by the concentration of the reactants raised to their stoichiometric coefficients measured at equilibrium.
4. Reaction quotient is the concentration of the reactants raised to the stoichiometric coefficients divided by the concentration of the products raised to their stoichiometric coefficients measured at equilibrium.
5. Reaction quotient is the concentration of the products raised to the stoichiometric coefficients divided by the concentration of the reactants raised to their stoichiometric coefficients, at the point both are equal.