I have this problem...where a strip of copper is weighed then suspended in a test tube constaining idodine vapor generated by heating solid iodine. a white compound forms and uniformily coats the strip of copper then the compound + copper is weighed. Then it is washed off completely dried and weighed.
Data: mass of clean copper strip 1.2789g
mass of copper strip and compound 1.2748g
Mass of copper strip after washing 1.2748g
ok so here is my dilema so how would i determine # of moles of the iodine that reacted. I assume i take the difference of the clean Strip and divide by the molecular mass of product that should have formed i know it is copper iodide but is it CuI2 (2 is subscript) CuI and then i guess You figure out #moles of copper by the ratio? between Cu and I or I2 (i know its diatomic in beging but is it Copper (2) iodide or Copper iodide... then how would i figure out the emirical formula since its just the simplest ratio?
Thank you in advance
2007-03-08 07:40:30 · 2 answers · asked by nate 1 in Science & Mathematics ➔ Chemistry
If it's white, it's copper(I) iodide.
Calculate the mass of copper reacted, and divide it by 63.5. Calculate the mass of iodine that has reacted, and divide it by 127. You should find the number of moles to be the same, which indicates CuI.
2007-03-08 07:59:57 · answer #1 · answered by Gervald F 7 · 0⤊ 0⤋
nicely, i found by skill of including 5.eighty 5+a million.37=7.22 a million.37/7.22= 19% H2O 5.eighty 5/7.22= eighty one% CO2 yet i'm not sure the place to take from there. the actually formula of toluene is methyl-benzene (meaning a benzene ring with a million methyl team) Benzene is C6H6 and methyl=CH3
2016-11-23 15:45:56 · answer #2 · answered by turnbow 4 · 0⤊ 0⤋