9.20g of ethanol are mixed with 12.00g of ethnocide acid in an inert solution. The total volume of solution is 250 cm^3. The mixture is left to equilibrate for several days. At equilibrium 70% of the reactants are converted to products. CH3COOH + C2H5OH = CH3COOC2H5 + H2O
What is the concentration of each reactant at the start?

Question

9.20g of ethanol are mixed with 12.00g of ethnocide acid in an inert solution. The total volume of solution is 250 cm^3. The mixture is left to equilibrate for several days. At equilibrium 70% of the reactants are converted to products. CH3COOH + C2H5OH = CH3COOC2H5 + H2O
What is the concentration of each reactant at the start?

aaronq · Answer

Find the initial concentrations of the reactants.

First find moles, $n=\dfrac{m}{MW}$ then molarity, $M=\dfrac{n_{solute}}{L_{solution}}$