B. Ratio of molar concentration of product and reactant raised to the power of coefficient
C. Ratio of molar concentration of product and molar volume of reactant
D. Ratio of molar concentration of product and reactant at specific time
Explanation
Qc (reaction quotient) is defined as the ratio of the molar concentrations of products to reactants, each raised to the power of their respective stoichiometric coefficients (coefficients in the balanced chemical equation).
