In the first order reaction A --> products, where beginning A concentration C0 0.1 0.5 1 1.5 2 5 mol/dm3, with given k value as 0.1 0.2 0.5 1 2 1/s, calculate the molar concentration of substrate A for every second of reaction for 5 10 15 20 30 40 50 60 .

To calculate the progress of reaction, and, the concentration change, we will use the following formula:

where k - first order rate constant[1/s], t -time [s], C0 - starting concentration[mol/dm3]

Then, for every second ( starting from 0) as t value, and for k putting 1/s, we can calculate the concentration value over time.

Take few k-values from the list and observe, that the higher k-value is, the faster our A concentration drops, means - the faster process goes from A ---> products.

Time	[unit]	[A]	[unit]