Question

During a reaction 24 cubic cm of carbon dioxide was given off. After 8 minutes no more gas was produced and the reaction was complete. What was the rate of this reaction

Answer 1

Answer:

Explanation:

Given parameters:

Volume of CO₂ = 24cm³

time taken for the reaction to complete = 8minutes.

Unknown:

rate of reaction

Soution

The reaction rate is a measure of speed of a chemical reaction. It is often calculated using the expression below:

    Reaction rate = $\frac{change in concentration of reactant/product}{time taken}$

   Reaction rate = $\frac{24}{8}$ = 3cm³/min

In this reaction, 3cm³ of carbon dioxide were produced per minute

Answer 2

Answer:

Rate of the reaction = 3cm³/min

Explanation:

The rate of a reaction is essentially the speed at which the reaction proceeds. It is expressed in terms of the amount of reactants consumed or the amount of product formed.

Mathematically, it is the ratio of the change in concentration over a certain time period.

$Rate = \frac{d[concentration]}{dt}$

For the given reaction the initial concentration of carbon-dioxide = 0

Final concentration = 24 cm³

Change in concentration = Final - initial = 24 cm³

Time period = 8 min

$Rate = \frac{24cm^{3} }{8min} = 3 cm^{3}/min$