the first order rate constant assume the first order rate constant assume the fi

Question

the first order rate constant assume the first order rate constant assume the first order rate constant at a given temperature for the hydrolysis of t-Bucl was 8.5 x 10 ^-5 sec, and that you started with 150 ml of 0.0750 M t-Buclwhat would the molarity of t-Bucl be after the reaction has taken place for 60 minutes? after 90 minutes? after 120 minutes? b. how many milliter of 0.200 M NaOH would be neutralized by the HCL produced after 60 mins? after 90 minutes? after 120 minutes? treat the problem as a neutralization process

Explanation / Answer

a) For a first order reaction, In(0.0750 M/c) = 8.5 x 10^-5 (t)

After 60 min, c = 5.523 x 10^-2 M

After 90 min, c = 4.739 x 10^-2 M

After 120 min, c = 4.067 x 10^-2 M

b) 0.2V = (No. of moles of HCl produced)

After 60 min, V = 750(0.075 - 0.05523) = 14.8275 ml

After 90 min, V = 750(0.075 - 0.04739) = 20.7075 ml

After 120 min, V = 750(0.075 - 0.04067) = 25.7475 ml

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