Multiple Choice 1 point
Consider the following reaction:
$C_3H_8 (g) + 5O_2 (g) \rightarrow 3CO_2 (g) + 4H_2O (g)$
Which expression best defines the rate of the reaction with respect to $CO_2$?
$rate = -\frac{1}{3} \cdot \frac{\Delta [CO_2]}{\Delta t}$
$rate = \frac{1}{3} \cdot \frac{\Delta [CO_2]}{\Delta t}$
$rate = \frac{3}{1} \cdot \frac{\Delta [CO_2]}{\Delta t}$
$rate = \frac{\Delta [CO_2]}{\Delta t}$