Moles

Sulphur dioxide reacts with chlorine in an addition reaction to form sulphuryl chloride.
SO2 + Cl2 ---> SO2Cl2
8.0g of sulphur dioxide was mixed with 14.2g of chlorine. The mass of one mole of SO2Cl2 is 135g.
Calculate the mass of sulphuryl chloride formed by this mixture.
Calculate the number of moles of SO2 in the mixture =
Calculate the number of moles of Cl2 in the mixture =
Which reagent was not in excess?
How many moles of SO2Cl2 were formed =
Calculate the mass of sulphuryl chloride formed =

Reply 1

TypicalNerd

Original post by Sajid-ul Haq

Start by finding the relative formula masses of SO2 and Cl2, using the periodic table. The relative formula mass of SO2Cl2 is given, so don’t bother trying to find it.

Next, use the formula moles = (mass of substance in g)/(relative formula mass of substance) to work out the moles of Cl2 and SO2.

Since SO2 and Cl2 react in a 1:1 mole ratio, the substance with the larger number of moles is in excess.

Since each mole of each reactant that reacts produces one mole of SO2Cl2 according to the equation, the moles of the reagent not in excess = the moles of SO2Cl2 produced.

Now, can you finish off the last part without any further prompts?