All the information is provided in the question #10.12 . PLEASE HELP! Thank you

Question

All the information is provided in the question #10.12. PLEASE HELP! Thank you

Decreased in a first-order reaction from 220 m mol dm^-3 to 56.0 m mol dm^-3 in 1.22 x 10^4 s. What is the rate constant of the reaction? 10.12 The elimination of carbon dioxide from pyruvate ions by a decarboxylase enzyme was monitored by measuring the ! partial pressure of the gas as it was formed. In one experiment, the partial pressure increased from zero to 100 Pa in 422 s in a first-order reaction. What is the rate constant of the reaction? 10.13 In the study of a second-order gas-phase reaction, it was found that the molar concentration of a reactant fell from

Explanation / Answer

For First order reaction kinetics

Rate law is :

ln Pt = -k(t) + ln Po [ WHen pressure is given ]

We know Pt = 100 Pa

But we havent given the initial pressure Po ;

SO it is not possible to calculate the rate constant

If we know Po

we can the 'k" from the above formula [ First order rate law ]

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