Chapter 24 Exam Mistakes And Clarification Flashcards
What is a transition ELEMENT
Where element forms at least one ion with partially filled d sub shell
So from d1- d9
What are 3 typical reactions of transition elements
Precipitation
Redox
Ligand sub
Barium chlroide is not a precipated, list the potential precipated you don’t want
Silver sukfate and csbrinste
Barium’s carbonate
Fir electron configurations to ions what to do first
Also what comes after 4s2 😭
Always draw it first normally and do try do in head
3D DONT FORGET
Damn, they gave whole table and you didn’t think it was fir a reason
So CHECK EVEN after the iron 2+ was made, NOW COMOARE IT AGAINST THE OTHERS USING THE fe 3+ dynasties
You’ll find now the ion has lower so it will oxidise etc
And final products were actually fe cl3 etc
And Remmeber to combine products in thr end
Good auetsion
R,ember exception for chromium copper
3d5 and 3d10
Colour change you got confused about was for CR(H2O)6
Adding ammonia becomes initially preiocste
Which is grey/ green so GREEN
Adding more became hexa chromium which is PURPOE
thing only two really did this, cr before but that ended green, so had to be this one
And if the product is a precipated don’t bith long, just do shorter ionic form and bun the ammonia
What were you supper to do for the q where it added excess nh3 to cr , what was mistake yiu made
You thought it was continous
Remmeber what ever equation makes sens just do it
Remember what sledged icntirnutrd ti column
Must be in ION FORM as aqeuous, not as compounds unless lreicosted, which they weren’t
Remember a octahedral one with 3 bidentate can form optical
Yeah thrynjusnrefkecye d
Why did student use a smaller conc even tho don’t need to?
Smaller conc means more volume to match moles
This means buffer titre
Bigger titre = LESS UNCERTWIJRY
