Question

During this reaction : P 4 + 5O 2 P 4 O 10 , 1.5 moles of product was made in 30 seconds. What is the rate of reaction?

Answer 1

The rate of reaction is 0.050 mol·s⁻¹.

For the reaction

$P_4 + 5O_2 \longrightarrow P_4O_{10}$

$\text{rate} = \frac{\Delta P_4O_{10} }{\Delta t } = \frac{\text{1.5 mol }}{\text{ 30 s }} = \text{0.050 mol}\cdot \text{s}^{-1}$

Answer 2

Answer

Vr = 0.5mol / s

Explanation

To calculate the reaction rate we have to divide the amount of substance consumed and the time it was consumed.

Vr = mol / t = 1.5moles / 3s

Vr = 0.5mol / s