Donna was studying the following reaction for a stoichiometry project: s(s) + 3 f2(g) → sf6(s) she wondered how much she could obtain if she used 3.5 g of fluorine. what mass of sf6(s) would she obtain from the calculation using this amount of fluorine?

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 :

2b2t

explanation:

2b2t