A student investigated the rate of the catalytic decomposition of hydrogen peroxide using manganese(IV) oxide. Oxygen gas was produced and collected in a gas syringe.
The student measured the time taken to collect 80 cm3 of oxygen gas. The table below shows the calculated rates of reaction for each of the four trials.
| Trial | Rate of reaction in cm3/s\text{cm}^3/\text{s}cm3/s |
|---|---|
| Trial 1 | 1.58 |
| Trial 2 | 1.64 |
| Trial 3 | 0.52 |
| Trial 4 | 1.58 |
Determine the mean time taken to collect 80 cm3 of oxygen gas. Do not include any anomalous results in your calculation.
Use the equation:
mean rate of reaction=volume of gas collectedmean time taken \text{mean rate of reaction} = \frac{\text{volume of gas collected}}{\text{mean time taken}} mean rate of reaction=mean time takenvolume of gas collected