89. Solving a chemistry problem

46. The rate constant of the reaction of saponification of ethyl ester of acetic acid with sodium hydroxide at 283 K is 2.38 l / mol * min. What time will it take to saponify 80% ethyl acetate if 1 liter of CH3COOC2H5 solution (С=0.04 mol/l) is mixed with 1 liter of NaOH solution (С - 0.04 mol/l)? How many times will it take longer if the starting materials are diluted 10 times?