[will_L]

taking the e.g. of reaction between dilute HCl and CaCO3,

upon collecting the volumes of gas of CO2 at different times,

i can plot a graph of " vol of CO2 against time", from which the gradient of the graph is equivalent to the rate of the reaction.

but is there any way to determine the order of the reaction?

[Jasim]

You can get the order of the reaction from the a stoichiometrically balanced equation, which should be obtainable from the graph.

[sjb]

You can get the order of the reaction from the a stoichiometrically balanced equation, which should be obtainable from the graph.

Not necessarily. The order has nothing to do with the stoichiometry.

[Guitarmaniac86]

You can calculate the rate of the reaction from the data you have, and you can work out the concentration of the CO₂ from the volume at that time point.

To find the orders of reaction follow this website:

http://www.chm.davidson.edu/vce/kinetics/MethodOfInitialRates.html

[will_L]

actually i'm looking for a method by simply plotting the graph, which only applies to the reaction involving the formation of gaseous product...hope it's nt too complicated