Rate equation - sodium thiosulphate + hydrochloric acid, how do I work out order of reaction 4 each reactant?
Rate= k [Na2S2O3]s [HCl]t
If s = order of reaction for sodium thiosulphate and t = order of reaction for hydrochloric acid. How do I find out the rate for s and the rate for t !!
Answer:
S is the order for Sodium Thiosulphate and T is the order for HCl. The order of the reaction is determined experimentally. You will need a table that shows 3 or 4 experiments in which one of the reactant's concentration is held constant and the other is changed. The rate of reaction is recorded for each experiment. One can then take the change in the rate between two experiments and the corresponding change in the concentration and determine the order of reaction for that reactant. For instance, if I double the concentration of HCl and the rate doubles, then the reaction is 1st order in HCl (i.e. t=1). If I double the concentration of HCl and the rate quadruples (ie. x4), then the reaciton is 2nd order since 2^2=4 (i.e. t=2).
keep the concentration of sodium thiosulphate constsnt and change the conc of hcl and measure the time taken to produce a definite amount of sulphur then apply values to the equation
R=K (NA2S2O3)S (HCL)T
R= (DEFINITE AMOUNT OF SULPHUR)/TIME
THEREFORE FROM ABOVE TWO EQUATIONS YOU CAN FIND THE VALUE FOR T
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