If you have 2.0 grams of SO2 available to react with oxygen, how many grams of SO3 can be produced in the following reaction? 2SO2+O2 -> 2SO3

1 Answer
Feb 23, 2018

The given equation is # 2SO_2 + O_2 = 2SO_3#

So, #2# moles of #SO_2# reacts with #1# mol of #O_2# to produce #2# moles of #SO_3#

Now,molar mass of #SO_2# is #32+16*2=64g mol^-1#

So, #2 g# of #SO_2# means #2/64# moles

So, similar moles of #SO_3# i.e #2/64# moles of #SO_3# will be produced due to the reaction.

Now,molar mass of #SO_3# is #32+16*3=80 g mol^-1#

So,weight of #2/64# moles of #SO_3# is #2/64 * 80 =2.5 g#