For gaseous reactions, the rate is expressed in terms of `dP//dt` instead of `dc//dt` or `dn//dt` (where `c` is the concentration and `n` the number of `mol`). What is the relation among these expresisons ?

Explanation

To derive the relationship among the expressions \( \frac{dP}{dt} \), \( \frac{dc}{dt} \), and \( \frac{dn}{dt} \) for gaseous reactions, we can follow these steps:

### Step 1: Define Concentration
The concentration \( c \) of a gas is defined as the number of moles \( n \) divided by the volume \( V \):
\[ c = \frac{n}{V} \]

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