. The ratio of moles O2 / moles KClO3 based on the stoichiometric coefficients of the three balanced equations vary for each proposed reaction above. For each of the three balanced equations, write the ratio of moles O2 produced to moles KClO3 consumed

The ratios of mole O2 to mole KClO3 are: 3/2, 1.5/1,1/2

Explanation:

The 3 possible equation of reaction for the decomposition of KClO3 are:

2KClO3 ==> 2KCl + 3O2

KClO3 ==> KCl + 1.5O2

2KClO3 ==> 2KClO2 + O2

When potassium chlorate (KClO3) is heated in the presence of manganese dioxide catalyst, it decomposes to form potassium chloride and oxygen gas.

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :