56. Solving a chemistry problem

2. A solution of acetic ester at C01=0.01 M and T=293 K is saponified with 0.002 M (C02) sodium hydroxide solution for the time t1 = 23 min. On 10 %. In what time (t2) will the same solution react by 10% when interacting with an alkali solution CO3 = 0.004 M