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A quantity of ethyl acetate is mixed with an excess of sodium hydroxide at 25^(@)C. 100 c.c. of the mixture is immediately titrated against 0.05N Hydrochloric acid of which 75 c.c were required for neutralisation. After 30 minutes 50 c.c of the mixture required, similarly 25 c.c of the acid When the original reaction of ester was complete 25 c.c of the mixture required 6.25 c.c of the second order velocity constant ("in mol"//1//"min")(at time =0) of the reaction using concentration in moles per litre and time in minutes. Reactions is first order each w.r.t. NaOH and ester. Indicator chosen for above titrationis such that it gives end point when only hydrochloric acid reacts with NaOH.(log 2= 0.30, log 3= 0.48, In 10 = 2.3)(Given your Answer after multiplying with a factor of 10 and excluding the decimal places)

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