Question

Chemical Kinetics and Electrochemistry (Chem 3062)
Individual, Assignment II
Date of Submission: March 17, 2020

1. A zero order reaction is 50% complete in 20 min. How much time will it take to complete 90%?
2. A first order reaction is 25% complete in 50 min. What would be concentration at the end of another 50 min if the initial concentration of the reactant is 5.0 × 103 mol dm–3?
3. In a first order reaction the log (concentration of reactant) versus time plot was a straight line with a negative slope 0.50 × 104 sec–1. Find the rate constant and half-life period of reaction.
4. Hydrolysis of ester (second-order reaction), in presence of NaOH, was followed keeping their concentration same at 0.02 mol dm–3. The specific rate constant at 35°C was found to be 5.55 mol–1dm3min–1. What proportion of ester will be hydrolysed in 30 min? Also calculate the time for 30% decomposition of ester.
5. A reactant reacts 30% in 30 min. If the reaction follows a second order kinetics, find rate constant and remaining concentration of reactant after 60 min.

Answer 1

Answer:

sorry u should do it by ur own.

Answer 2

Answer:

1. 8/ 3 min will take

Explanation:

hope the answer will help you