This is a limiting reagent (LR) problem and you know that because amounts are given for both reactants.
6.27 kg what?
how many liters of SO2 measured at STP are produced in the reaction of 6.27 kilogrrams with 234 Liters of O2 at 220 degrees celsius and 2 atm?
3 answers
PbS
2PbS + 3O2 ==> 2PbO + 2SO2
This is a limiting reagent (LR) problem and I work these the long way.
mols Pb S = 6270 g/molar mass = ?
mols O2. Use PV = nRT and solve for mols = n = ?
Using the coefficients in the balanced equation, convert mols PbS to mols SO2
Do the same and convert mols O2 to mols SO2.
It is likely that the two values will not agree which means one of them is not right; the correct value in LR problems is ALWAYS the smaller value and the reatent producing that value is the LR.
Using the smaller value, convert mols SO2 to L L = mols SO2 x (22.4 L/mol) = ?
This is a limiting reagent (LR) problem and I work these the long way.
mols Pb S = 6270 g/molar mass = ?
mols O2. Use PV = nRT and solve for mols = n = ?
Using the coefficients in the balanced equation, convert mols PbS to mols SO2
Do the same and convert mols O2 to mols SO2.
It is likely that the two values will not agree which means one of them is not right; the correct value in LR problems is ALWAYS the smaller value and the reatent producing that value is the LR.
Using the smaller value, convert mols SO2 to L L = mols SO2 x (22.4 L/mol) = ?