A flask is charged with 0.100 mol of A and allowed to react to form B according to the hypothetical gas-phase reaction A(g) → B(g). The following data are collected:
| Time (s) |
0 |
40 |
80 |
120 |
160 |
| Moles of A |
0.1 |
0.067 |
0.045 |
0.03 |
0.02 |
(a) Calculate the number of moles of B at each time in the table, assuming that A is cleanly converted to B with no intermediates.
(b) Calculate the average rate of disappearance of A for each 40-s interval in units of mol/s.
(c) What additional information would be needed to calculate the rate in units of concentration per time?