What have you got for the previous parts to the Q and why are you stuck on the last part?
Well for the last question cos we're looking for the number of moles, I decided to use this formula Number of moles = Number of particle/6.0 x 1023so2 / 6.0x1023 but my answers wrong?!
Attached is a work through of the answers. I hope this helps (pretty much what Pigster was eluding to, so thought I would finish it off as a worked example). If you need any revision notes or questions/model answers etc. check out my 100% free website www.scienceskool.co.uk
Attached is a work through of the answers. I hope this helps (pretty much what Pigster was eluding to, so thought I would finish it off as a worked example). If you need any revision notes or questions/model answers etc. check out my 100% free website www.scienceskool.co.uk
Have fun
Alex
Woow, Thaanks a loot!! I'd definitely check it out!!
Attached is a work through of the answers. I hope this helps (pretty much what Pigster was eluding to, so thought I would finish it off as a worked example). If you need any revision notes or questions/model answers etc. check out my 100% free website www.scienceskool.co.uk
Have fun
Alex
Hello there, Sorry to bother you but I don't understand why you subtracted the remaining moles of I2 from the starting moles of I2 ? The remaining I2 reacted with thiosulfate not with SO2! ONLY 0.001 moles reacted with SO2 and the remaining I2 reacted with thiosulfate. So shouldn't the number of moles be 0.001 moles?
Attached is a work through of the answers. I hope this helps (pretty much what Pigster was eluding to, so thought I would finish it off as a worked example). If you need any revision notes or questions/model answers etc. check out my 100% free website www.scienceskool.co.uk
Have fun
Alex
Hi ajsullivan,
Sorry to bother you, but why can starch be used as an indicator for this titration (part a)?