8/11/2019 Transition Metals Test Ms
3/4
8. (a) (i) Zinc 1
(ii) oins & resist corrosion (not r!stin#) / ,ard +earin#'r
stat!es & resist corrosion/ attractive patina'r electrical
connections & #ood cond!ctor 'r m!sical instr!ments &
attractive / sonoro!s'r pl!mbin# fixt!res & ,ard / corrosion
resistant 1
(b) (i) odi!m carbonate/sodi!m ,ydroxide/ot,er s!itablenamed al
ali (accept correct form!lae) 1o not accept al aliB on its o+n
(ii) tarc, 1
(iii) C!st before t,e end point/+,en sol!tion t!rns pale stra+
1
(c) (i) = 2 mol 1
(ii) 'ne (1) 1
(iii) = 2 mol 1
(iv) = 2 mols !2&
contains = 2 > 63=5 # of ! < =12 # 125 cm 3 of sol!tion
contains 1 > =12 # < 1=2 # 1@ ! < 1=2 /1=65 > 1 < =
@ 1(Allo+ 6= $ = ; allo+ ecf)
[11]
Paddington Academy 3
8/11/2019 Transition Metals Test Ms
4/4
9. Transition elementCu2+ 1s22s22p63s23p63d9 (1)!ransition
elements have one o"idation state that has anincomplete set of 3d
electrons / have one ion #ith a half$filled 3d orbital (1)
Allow has at least one half-filled d orbital / partially filled
3d sub-shell
Com !e" #on8xample of a $o er complex ion e=#= D !(H 2') 6E
2& or ! l %27 (1) ;
ia#ram of t,e copper complex s,o+in# t,reedimensions e=#= !se of
+ed#es or dotted lines (1) ;orrect bond an#le to matc, t,e complex
/ correct nameof t,e s,ape of t,e complex (1) ;
*f a copper comple+ that does not e+ist is used then first
threemarks not available
*f a correct iron comple+ is given then e+ample mark cannot
beawarded
Allow s,uare planar where appropriate.i#and is an electron a#r
donor (1) ;opper("") ion is an electron a#r acceptor (1) ;ative
bond exists bet+een li#and and t,e copper("") ion (1)
lectron pair donor. electron pair acceptor and dative bondmarks
can awarded from an appropriate diagram
%ro ert#e&everal oxidation states e=#= copper ,as &1 and
&2 or iron ,as &2 and &3 (1) ;
*gnore copper has a 3 *gnore iron has a $ o+idation state
orms colo!red compo!nds e=#= copper(ii) c,loride is#reen or
iron("") s!lp,ate is pale #reen (1) ;8lement or compo!nd ,as
catalytic propertiese=#= "ron is a catalyst in t,e Haber process
(1) 11
' a!#ty of wr#tten $omm n#$at#on
Fse of tec,nical terms 7 at least t,ree terms from t,e follo+in#
list are!sed in t,e correct context
G li#and
G dative bond
G coordinate bondG tetra,edral
G s !are planar
G octa,edral
G oxidation (state)
G catalyst
G electron pair
G lone pair
G orbital
G s!b$s,ell (1) 1 [12]
Paddington Academy 4
