Grade 11Physical Chemistry
find the order of the following reaction :-2H2O2 -----> 2H2O +O2
find the order of the following reaction :-
2H2O2 -----> 2H2O +O2
2 Answers
Shubham Singh
order cannot be predicted just by seeing the balanced reaction
molecularity is 2
Aarti Gupta
Order of reaction is defined as the sum of powers to which the concentration terms are raised in the rate law equation to express the observed rate of the reaction.
Decomposition of hydrogen peroxide is an example of dependence of rate of reaction on concentration of single reactant.With different concentrations of H2O2,when series of trials are performed it is found that rate of reaction increases with direct proportion to the original concentration of H2O2 which is expressed mathematically as –
rate = k[H2O2]
The above equation is called as the rate law for decomposition of H2O2.k is called as rate constant.Since in rate law expression rate is directly proportional to the concentration of a reactant which is H2O2,so decomposition of H2O2 is an first-order reaction.
Decomposition of hydrogen peroxide is an example of dependence of rate of reaction on concentration of single reactant.With different concentrations of H2O2,when series of trials are performed it is found that rate of reaction increases with direct proportion to the original concentration of H2O2 which is expressed mathematically as –
rate = k[H2O2]
The above equation is called as the rate law for decomposition of H2O2.k is called as rate constant.Since in rate law expression rate is directly proportional to the concentration of a reactant which is H2O2,so decomposition of H2O2 is an first-order reaction.
Other Related Questions on physical chemistry
Which of the following aqueous solutions remains neutral after
electrolysis
Which of the following aqueous solutions remains neutral after
electrolysis
electrolysis
physical chemistry
Last Activity: 3 Years ago
In the reaction A + 2B ⇌ 2C, if 2 moles of A, 3 moles of B and 2 moles of C are placed in a 2 L flask and
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
In the reaction A + 2B ⇌ 2C, if 2 moles of A, 3 moles of B and 2 moles of C are placed in a 2 L flask and
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
physical chemistry
Last Activity: 3 Years ago
True or false when an electron in ground state of hydrogen atom is excited with an energy that is greayer than e2-e1 but less than e3-e1 the electron will get excited n=2
True or false when an electron in ground state of hydrogen atom is excited with an energy that is greayer than e2-e1 but less than e3-e1 the electron will get excited n=2
physical chemistry
Last Activity: 3 Years ago
18 19 gram mixture of na2co3 and nahco3 on heating gives 2.2 gram CO2 gas find the percent nahco3 (by mass) in mixture
18 19 gram mixture of na2co3 and nahco3 on heating gives 2.2 gram CO2 gas find the percent nahco3 (by mass) in mixture
physical chemistry
Last Activity: 4 Years ago