UNITS OF RATE

Reactions rate has the units of concentration divided by time. We express concentrations in moles per litre (mol/litre or mol/1 or mol 1–1) but time may be given in any convenient unit second (s), minutes (min), hours (h), days (d) or possible years. Therefore, the units of reaction rates may be

mole/litre sec   or    mol 1^–1s

mole/litre min or mol 1^–1 min^–1

mole/litre hour or mol 1^–1 h ^–1 and, so on