Giải chi tiết 1 số bài tập sử dụng Định luật bảo toàn electron
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qhlyT qii lgA\ gNG9{y H9$ ryIq
. chdt
. i. rdn
.
crAr roAN nANc PHttoNGpnApsAo TOANELEqI+ONc6c
p6 -?gjUQt Fe ngodikh6ngkhi mQtthdi gianthu dusc 12 ghin hqp
Cflu 1.
dich HNO: lodngth'
FeO,FerO+,FezO:,Fe du . tldu tan irodntodnh5n hap d6 bing dung
dugc2,24litkhi NO duy nh6t(dktc).Gi6 tri ciram ld ^
n
20'16q. . --^. . ,
D' ^,
g
C' 15,12
B. 10,08g
A. 5.04e
tl?y
todnt7,4 grrSirrqp3 kimlopiAl, Fe,Mg trongdule-dich.Hgl
cau z. ni u"t'"ihodn
lOcldy
dich CuSO+{u,
tho6tra 13,44fitklti. NC" ctro3i,8 g h6n hqp trontdc dUngvdi dung
thi thu dusc
du
n6ng
HNo:
dich
dung
v6i
dpng
ritgtlc
phin
sau
aoq.
;;;;";O ;;6trh"itr'
V lit khi NOz(dktc).Gi6 tri V ld
D.76,82|it
C'53,761it
8.22,4|it
A.||2'|it
t6t chkhiNo thu
ciu 3. Hda tan hodntodn28,8g kim 1o4icu u1o^dulgdichtlNol,l?alq'
rnqor, ThiStich khi
dugcdemoxi h6athdnhNoz riri-sucvdonu6c c6 Ozd'chuy€ntri5ttrrann
Oz(0 dktc) dd thamgia vdo qu6trinh trOnld
D' 8'96lit
g.1,56lit
c. 6,72lit
A. 5,04lit
nhau:
C6u 4. Chiam g h5n hW2kim lo4i A, B c6 h6atri kh6ngd6i tnann2ph1'nbing
phAn1 tanh6t*ng dungdichHCl, tqoryt1,792Litgz (itktc).
p oxit'
PhAn2 ntngtrong oxi thu dugc 2,84 gh6nh-o.
Gi5tri criam ld
C ' 3 , 1 2g , ,
8 . 2 , 6 4g
A . 1 , 5 6g
nhau:
Cffu 5. Chia 38,69h6n hqp gOtttp.ia M co h6atri AuynnatthAnhZ ynaltbdng
(itktc)'
dA"l' fun utruE'rit ong ) lit Oungdich HCI th6ytho6tra 14'56litHz
pht" 2: Tanhodntodn,ttrg OungAicnHNO: lo6ngn6ngth6ytho6tru ll,2lit khi NO duy
nhdt(dktc)
a) N6ngd0 rnol/l cta dungdich HCI ld
D. 0,65M
c. 0,55M
B. 0,25M
A. 0,45M
phin rlng6 phAn1 ld
b) Kh6i lugng h6n hqp mu6i cloruathu dugc khi cOc4ndungdichsau
g
D.54,65
g
c.55,64
g
B- 65,45
A . 6 5 , 5 4g
c\ Yo^criaFe trongh5n hqrpbandduld
O. KCtquf,kh6c
c . 5 8 , 0 30 h
8 . 5 0 , 0 5%
A . 3 0 , 0 5%
d)- Kim lopi M ld
D' Cu
C' Al
B. Fe
A.Mg
HNOz2M' thu tlugc
Cflu 6. Chotanhodntodn3,6 gh6nhqp gdmMg vd Fe trongdungdich
dsngv6i dungdich
dungdfchD, 0,04mol khi NO vd 0,0i mol NzO.Cho dungditl P t6c
N"dff ify do, lgc vd nungk6t ttia tt6nttrOi lugngthu dugcm g chdtrdn'
a) Gi6 trf ciram ld
D . 7 , 8g
c . 5 , 2g
B . 3 , 6g
A . 2 , 6g
b) Thctich HNo: ddphin ring ld
D. 0,13lit
, lit
thdi
s-h#;;Hg6m
i-l.?rt*sc16,08
! :ntu
ca,',.ti*;lt-",p.t o,,JrJolLtiltmQt
n6" hqp H tr6n bing dungdichHNo3 lodng,
*", ao ia r"""a 3 oxit crian6. Hda tantrctiuqng
thu dugc 672mlkhi No duy nh6t(dktc).Tri s6 criax ld
D) Kh6ngth6xlc dinh
c) 0,24
B) 0,2i ,
A) 0,15
c6 chria0,075mol
dac
Ciu 8. Hdatan a (g; Fe'o, b?ngdungdictrHzSo+_dam
16ng'"}1",'d":ra'
thu dugcb! mOtmuOirra.O 168ml khi SOz(dktc)duy nhdttho6t
HzSO+,
a) Tri s6 criab ld
D.l2g
C.6,0g
B . 8 , 0g
A . 9 , 0g
b) Tri s6 criaa g Fe*Oyld
D) 3,48g
c) 4,64g
B) 2,4g
A) 1,08g
Chuyantlii: PHANU]'tc OXYHO+*:5gg
c)' Cdng thric cria Fe*Oyld
C) FerO+ D) khdngx6cdfnh9Yqt._
ej FezOr
a; r.O
_r
ee
C6u 9. Khi chom g kim lo4i Al phin img hodntodnvdi dungdicfrHzSOl.{a-..{At:.ning
diQntir?
rqora1,24Iitkhi Sbz thoiltrathi lugngkim 1o4iAl ndy dd trao ddi baonhi6u
D) Nhan0,6mol
A) Nhudng0,6 mol B) Nh4n0,imol c) Nhucrng0,2mol
HNOr r6t lodngc6
Cffu 10.Hdatanhoantodnm g bot kim loai Al vdomQtluqngdungdich
vdi lugngdu
du, c6 0,03mol khi Nz duy nhSttho6t ra.Lhy dungdfchthu dugc cho t5c dpng
ph6n
dungdich xrit, dun n6ng,c6 672 ml duy nh6tmot khi (dktc) c6 miri khai tho6tra. c6c
ra hodntodn.Tri s6 criam ld
ung xay
-A)3,24
D) 3'51g
C) 4,86g
B) 4,32g
g
ceu rr. u6nnip X g6mzii^'toqi n, B c6ho6tri khongo6ltam vdn.chia0,8gh6nhqp
X thdnh 2 phAnbing nhuu'
phAn l: Tan hodntoan trong HzSO+,gi6i ph6ng dugc224ml Hz (tlktc)
PhAn2: Bi oxy ho6 hodn todn t4o ra m g h5n hqrp2 oxit'
ttru dusc o phAn1 ld
r"*g na" hq,'pmuoi sunfatt
C'0,889
B. 1,369
A. 1,769
b) Kh6i luqng-mg h6n hqp oxit d phAn2 ld
D' 0'969
C' 7,2g
8.0,729
A. 0,569
doi. ctria 4,04gX
khdng
noatclqngXr,Xz c6 ho6 tri
X g6m latiL?i
cau rirnil;e'p
thdnhhaiphAnbdngnhau:
pnar l: Tanhodntidn trongdungdichHCI vd HzSO+t4ora l,l2lit 11,(dkt!);
ptrAn2:Tircdunghodntodnv6i dungdichHNor vd chi taorakhi No duy nhdt.
a) ThCtich khi NO (lit) thoatra d dktc ld
D' l'494
c.0,323
B. r,746
A.0,747
b) KhOilugngm (g) mu6i nitrat t1orad phAn2 ld
D' 3,11
c. 4,11
8.8,22
A.2,r8
8,96lit
cau 13. Hod tan hodn toin 19,2g kim lo4i M trongdungdich HNor du thu dugc
(Att.l hdnhqp khi g6mNOzvd Nb c6 ti le th6tich 3:1.X6c t1!nhkim loai M?
D' Zn
C' Al
B. Fe
A. Cu
dugcdungdichA vd 6,72lit h6nhqp
thu
du,
cdu 14.Hdatanhoirntodn11,2 gFevdoHNOI
khi B g6mNO vd mot khi x, v6i ti 19thc tich ld 1:1.X6c dinhkhi X?
D' NzO
C' NHr
B. NOz
A. NO
4
Cffu 15.ChomQthd;;khiCO quam (g) FezO:nungn6ng,thu dusc 14g h6nhqpI 99(dktc)'
;;6t;A".ctto tt6" h",pX tanhodntodntrongdungdichHNO: thu dugc2,24litkhi No
Giritr! criam lh
D ' 2 0 ' 5g
C ' 8 , 2g
9 . 1 4 , 6g
A . 1 6 , 4g
,
2M thu
cffu L6. Chotan hodntodn58gtr6ntrqpA g6mFe, Cu, Ag trongdungdfch$No:
luqngmu6i
dugc0,15mol NO, 0,05 mol NzO vd dungdi.tt D. C6 cpn dungdich D, khdi
;jA5i
**T.trTal-tl
B.8e,8g
c.rr6,eg,:
.D'rr0,7s
chhtr6n'ChiaX thdnh
g6m
4
X
hq'p
pezOr
h5n
dugc
cao,
dQ
O
nttiit
CO
bing
Cia LT.fnri
2 phAnbing nhau:
piilifi
iongv6i dungdichHNo:du,thudugc0,02molNo vd0,03molNzo'
d[cn6ng,duthudugcV lit (dktc)SOz'
pht; fucnoiu,itrotrgdungdichHzSO+
Gi6 tri cria V ld
A.2,24
B.3,36
c.4,48
D.6,72
qA'PIIAN S
9"1'""yol
5gg
mQtchot6c
Cfru 18. Chiah6n trqp X g6m Al, AlzO:,ZnO thdnhhai phAnbing nhau.PhAn
dungdich
dpngv6i dungAicfrNaOHOu,thu dugc0,15mol khi. PhAnhai tanhodntodntrong
y
ffNO: thu dugc0,075mol khi Y duy nfr6t. ta
D' Nz
C' NzO
B. NO
A. NOz
dungdich
Ciu 19.Chotanhodntoin3,76g h6nhqp X o d4ngbQtg6m S,FeSvd FeSztrong
dich
dung
v6i
HNOrthu dugc0,48mol Noz va dungdich D. cho dungdich D 6: 4tng
t,i" 46" r.n5ilugngkhongddi, dugcm g h5nhcvprin' Gi6tri cria
Ba(oH)zdu, loc
"; ";;kct
mld
g
D' 15'145
g
C' 13,980
g
B. 12,815
g
A. 17,545
Noz' c6ng
cflu 20. cho tan hodntodn7,2 gFe.OytrongdungdichHNor thu dugc0,1 mol
thric phdnttr ota oxit ld
B' Fe:O+ C' FezO: D' CaFeOvd Fe:O+d€utlfng
A. FeO
AgNOr
Cdu2I. Cho2,673g h6n hqp Mg, Tnthc dpngvira dri vdi 500m1dungdich chria
0,02Mvd Cu(NOr),b,lM. fhanh phAn%kh;it,tqttg Mg trongh6n hqp ld
D' l'98yo
C' 98,020
B .I9,75o/o
A. 8},2oh
g-h6i.hqpB
q6^m
I t,ZlithSnhqpigO-ClovdOxiphinringvuadrivdi 16,98
Cdu22.Cho
h6n
trong
A1
Mg,
cira
Mg vd Al tao ra 42,34g hbn hqrpsanphdm.fnunn phAnkh6i lugng
hqpB?
56,88ohD' 75%vd25o/o
B. 48%vd52o/oc. 43,12o/ovit
A.77,74ovit22,260/o
NOz(dktc)'
C6u 23.Cho5,6g FetanhtfttrongdungdichHNOrthu dugc2l,1gmu0ivd V lit
Tinh V.
D' 6,72lit
c. 5,6lit
B. 4,48lit
A.3,36lit
X g6m Mg vd Al vdo dungdich Y g6m HNO:, HzSO+dic (du)
Ciu24.Cho l5 g h6n hqp
^SOr,lO,
NOz,NzO.Tirth% khdi lugngAl trongX'
thu dugc0,1mol-m6inri
D' 63%
c. 46%
B. 50%
A.36%
X ld sin
Cao Zi. Cno0,02mol Mg tan hi5ttrongdungdichHNO: th6ytho6tra 0,01mol khi
phAmkhrl duy nh6t(dktc).X ld
D' NzO
C' NO
B. Nz
A. NH+NO:
g6m
Cd|.26.Hodtanhodntodnm g Al virodungdichHNo: lodngdu thu dugch6nhqpkhi
0,015mol NzOvd 0,01mol NO (phin tmg ihOngt4o mu6i amoni).Tinh m.
D ' 1 ' 3 5g
C ' 8 , 1g
B . 0 , 8 tg
A . 1 3 , 5g
khi a (e[tr) g6m Clo vd oxi pli6nring vira tr6tvoi h6n hqp g6m
can27.Cho v lit h5n h-o,p
ph6m.Tinh v.
4,g g Mg vd g,1g Al t4oinanny,.os g h5nhgp c6cs_nn
D' 8,4lit
c. 5,6lit
B. 10,08lit
i. tt,zut
taota 0,05mol
n6ng
dflc
Ciu 28.Hodtan 2,4 gh6nhqp Cu,Fe c6 ti lQmol 1:1trongHzSO+
mQts6nphAmkht X duYnhdt.X ld
D' SO:
C' HzS
B. SOz
A. S
v lit No
cau zq. Khi hodtan hodntodnm g kim lo4i M trongdungdichHNo: du thu dugc
dugc V lit
J"V rfr{i ivfA,kh6", hod tan hodntodnP g M trong 9Tg dich HCl.du.cfingthu
dugc6 tron'
khi, kh6i lugng -.r6i Cloruathu dugc Ainf SZ,+t%k}'di lugng mudi Nitrat thu
C6ckhi <1o
C' Fe
B. Cr
A. Mn
0,6721itkhi X duy
Ciu 30. Hod tan 0,03mol Fe*OytrongdungdichHNO: du th6y sinhra
nnatldttc). X6c dfnhX.
C' NzO D' Kh6ngx6c dfnhdugc'
B. NO
A. NOz
ph6nring t4o thdnh
Ciu 31. Khi cho 9,6 gVg tac dungfr6tvOi HzSO+dlc thdyc6 49 g axit
MgSO+,HzOvd s6nPhdmX. X6c dinhX'
D' SOz
C' HzS
B' SO:
A. S
adi:pnANtNc oxy no,q,- qlU*
c_rruyan
thu duqc1,792
ciu 32.Hodtan 5195gh6nhqp al,znc6 ti lQmol 2:1 bSngHNO: lo6ngdu
lit khi X ld sin phAmt tttt Ouytttt6t.Xac dinh X'
D. NOz
C. Nz
B. NzO
A. NO
X ld sdnphAm
khi
ra
Ciu 33.Hodtan h6t2,Log r.o i.ong 0,1mol HNo: vla dt th6ytho6t
khri duy nh6t.X6c clinhX.
D' NO
C' NOz
B. NzO
A. NzOs
c6u 34. Cho0,969Cu t6c dungv6i HNOr du thu dugc0,224litkhi X (dktc).X ld
D' Nz
C' NOz
B. NzO
A. NO
rr6tvoi dung
dpng
(MS)
t6c
cffu 35. Cho 12,125g suntuakim 1o4iM c6 ho6tri kh6ngd6i
dichHzso+d{c n6ngdu tho6tra !l,2lit Soz(dktc).X6c dinhM.
D.Mg
C.Cu
B.Mn
A.Zn
,
.
mol
sO
c6
FezO:
Fe:O+,
gdm
FeO,
A
hqp
h6n
Cffu 36. Cho2,3521itCO (dktc)di quam.g
;"rg n6ngthu dugch6n hqrpchAirann. cho B tan htit trong dungdich HNor du
;a"g;d
ftlO duy nh6t(dktc).C6cphdnringxiy ra hodntodn.Tinh m?
ffinoatruZi+
q ' 13'92g
C' 78,88g
B. 118j2g
A. 20,88g
dungdich
cao si. cno tr6n'tqrpgo- r.o, Cuo, Ferooc6 somol bangnhaut69dgngh6tvoi
chgt'
HNO, thhytqora 1,00bHtNO2vd 0,112lit NO (c6ckhi o dktc).Tinh sOmol moi
D' 0'01mol
C' 9:02T91... .
B. 0,03mol
A.0,04mol
HNor du
cffu 38.Hod tanhodn toin 12 g-h6nhqp Fe, c., (90ti lQmol 1:1)bdngdungdich
dungdich X vd v lit h6n hqtpkhi Y(itktc) g6. NO, NOz c6 dlHz: 19. Tinh V'
thu dugc
'A.z,Zllit
c. 4,48Iit
lit
B. 3,36
?-'f,6rit.^ .,
Sriii dunn6ng(k10nq
Cflu3e.rr6n84gbQtFevdi32gbQt
:: f6$.m|;":,1,tTgq l?l
V lit
A saukhi nungbing dungdich HCI du dugcdungdich B vd khi C. DOtch6ykhi C ciin
oxi (dktc). CLcphhnringxiy ra hodmtodn.Tinh V'
D' 33,6lit
c. ll,zlit
B. 3g,2lit
e. to,s lit
tan A
Ciu 40. Khir m g FezOrU"ngUritr" dugc 2,7 gngdcvd h6n hqp-A g6m 4 chAt'Hoa
trongdungdich HNor du tho6tra v lit No duy nh6t(tlktc).Tinh v
R.S,OlitB.4,48litc.3,36litD'2,241it
dY?'
cfru 41. Cho khi Hz di qua 6ng sri chriam g FezO:dun n6ng, saumQttlgi g]llthy
thdy
iO,SSg h6n hqp + chhtrin. uoa tan hi5tJrqng chStrhntr€ntrong dungdich HNO: du
tho6t u-a3g-ot NO, duy nh6t.Tinh kh6i lugngHNOr dd thamgia phin ung?
D' 8l'27g
g
C' .108,36
B. 27,09g
A. 54,18g
16,2gkim lo4i ulrroa ffi khongdoi) trongbinh khi chria0,15mol oxi'
cau +i. oot
"n[v chotan trong dungdi.n FIct du th6ytho6tra 13,44litHz (dktc).c6c phin
cr.a, ra" trr" a"q.
img xiy ra hodntodn,x6c dinh M.
D' Fe
C' Mg
B. Zn
A. Al
htit v6i
t6c
Cdu 43. Cho a g h6n ttqrpA go- FeO,CuO,FerO+cOJOmol bdngnhau d'ng
dfchB vd
lugngvira dri talsomt o"ng dJchHNor niing t10b (Mol/l) ilun nhgthu dugcdung
tri cta a, b
;,i;e fit ttar ftq,pkhi C (dktc)gdmNOz,NO c6 ti kh6i so vdi Hzld20,l43' Gi6
lAnluqt ld
A . 3 v d 1 , 0 5 B . 4 6 ' 0 8v d 7 , 2 8 C ' 2 3 , 0 4 u d I , 2 8D ' 5 2 ' 7v d 2 ' 1 9
loSngdu
ca" ++.u6" rrqpA g6mAiva Fe.XCutrodtantrct t t g A trongdungdichHzSo+
n6ngdu thi thu dugc
thu dugc8,96litf
lil
D .3:18-a
c' 8,3761it
B. 5,04lit
A.4,48lit
."
hon
vd
B
khi
duoc
t]ry
nunq
Fezor
Fe,
hqp
qua
h6n
CCi
khi
luong
cao +i. rrtOi *Ot
16T
HzSo+
;* ;;ffiffi;.
f:
choB quanu6cvditrongduthAytaorao g tct t*. uoatanD bing
5nV9nryP9dit4$\!\9""Q*XI{9$---
criaFe,FezOr'trong
dflcn6ngdu t\6y tao ra0,18mol SOzvd 24gmu6i.Xrl,cdinh % s6 mol
hdn hqpian ddu?
A.75%;25%8.45%;55o/oC'80%;20%D'50%;50%
hidrotrongddy
Cao d. H6r, trq,pa gO- 2kimtoai ie6u c6 ho6tri khdngd6i, dimg.ty6t
dich CuSO+du,
hoptdQngvd kh6ngtac OUngvdi nudc).ChoA phin ring hodntodnvdi dung
l,l2litNO duy
Un fo*iCu thu duqc chophanring h6tvdi dungdichHNO: du thi thu dugc
,rriaiGr.tiiil,to
thi thu
toq'gA o trenph6nrmghodntodnv6i dungdichHNo3losng
dugcv lit Nz (dktc).Tinh v?
D' 0'448lit
c. 0,336lit
B. 0,2241it
A. o,llzlit
, ,
t?
ciu 47.Hodranhodntodnm g FerO+vdo dungdich HNor lo6ngdu, td! tl si-Io:Th
HNo:' Biot sO
dugc oxi ho6 thdnhNOz r6i suc vdo nudc c6 ddngoxi dCchuyi5nhtit thanh
moi oxi thamgia vdo c6cph6nringtrongqu6trinhtrenld 0,15mol. Tinh m?
D' 139'2g
C' 13,92g
B. 162'4g
A. 20,81g
h-qpjn?t.'i
Ciu 51.Khi dot 37,9 ghSnha'p ni, introng binh khi Clo thu dugc 59,2g 19.t
(dktc).Tinh khoi
c[" 1oa,rrgpndy tu" frct trong dungdich nbl {u th6y tho6tra rl,2lit khi
l";t -6i li- llai A1, Zntringh6n hqp ban ddu'
B' 31,4g vd 6'5 g
A. 16,2gvd2l,7 g
D ' 5 , 4g v d 3 2 ' 5g
C . 1 0 , 8g v d 2 7 , l g
a mol oxi'
Cffu 55.Oxi horim6t iuqngFe thdnhh6nhqrpX g6mFeO,Fe:Oa,FezOrcAndtng
peiJ,i r,"t";;il hbnrrqp"XvAFecAnb *ot et. Ti lQa:bbing
D' 1'5
C' 1,25
B. I
A.0t,75
Al. Hodtan
ciu 56.TrQn0,54g b6t Al v6i h6nhqpFezO:,CuOriii ti6nhdnhphin ringnhiQt
(dktc)hdnhqp khi B
d,6r;il A ;"fr,ai img trongdungdichHNo: du thu dusc 0,896lit
gdmNO, NOz.Tinh ti khdi criaB sov6i Hidro?
D' 23
c. 19
B. 2r
A.l7
kh6i luqngph6nimg vdi
Ciu 57. Cho 10,4g h6n ftqrpfe vd C trongd6 Fe chii5m53,85o/o
NO (dktc).
HNO: d6cn6ngdu-taoNOz ld sin phAmtctuiOuynh6t.Tinh thc tich khi
D
c. 42,561it.
B. 51,52lit
x. ru,zlit
^44'8.lit . i
duynhdt'
SOz
khi
ra
tho6t
thAy
n6ng
d[c,
HzSO+
g
sat
bing
y
oxit
todn
hodn
tan
Ciu11.Hda
tan lusng
M{t kh6c,saukhi khri hodntodncfrngy gixit d6 bing 999gtet,dQ caoriiig hOa
khi
luqng
lAn
Fe t*o thdnhb6ngHzSOr d{c,n6ng itti inu.Ayocluqng khi Soz nhicu eilp
SOzo thi nghiQmtr6n. COngthric criaoxit sdtld
D' FeCO:'
B' FezO:C' Fe:O+'
A. FeO.
X thdnh
Cfru80. Cho7,22ghdnhqp X gO- Fe vd mQtkim loai M c6 ho6trf kh6ngd6i, chia
2 phdnbingnhau
PhAn1 tric dpngv6i HCI du thu dugc2,128lit khi (dktc)
No duvnh6t(dktc)
i,il; i ;;tac?u"g ""r or"gJitnrno: duthuduscr,7e21it
Kim lo4i M vd % M trongh6n hgPld
Al v6i 22,440'
B. Cu voi25,870/o.
A. Al v6i 53,68Yo
-c. znvoi 48,120/o.D.
Ciu 86. Hoir tan 2,64 gh6n ho,pFe vd Mg.bing dungdfch.HNo:|9Ang,9y:-th.".dugc,
fn
14,75.
bdng
Hz
vdi
so
kh6i
tj'
Nz,.c6
vd
No
g6m
khi
hq'p
h6n
dktc)
orra* khri ra 0,g96rit to
fnann phAn% theokh6i luqngcriasft trongh6nhqpbandduld
D'38'20oh
C' 38'1870'
B. 6|,82oh'
A.61,80%'
q19fY dWc l'If.
Cflu 88.Hodtan hodntodn8,9 g h6n hqp Zn,Mgbing.dung dich HzSO-+
X' KhOilugng mu6i
lit SOz(ei
B. 18'l g.
A . 2 8 , 1g .
C . 3 0 , 4g .
D . 2 4 , 8g .
7-
ad: pHAntNc-o*{Jg9A --559
_c_huvon
n6ngdu
Cffu 89. Hod tan 20,8 ghSnhqp bQtg6mFeS,FeSz,S bing dungdich HNO: dflc
dich A t6c
,f,,, eoq. 53,i6lit Nbz"(sin phAmt<4riOuyntr6t,9 dkc vd dungdich A. Cho dung
ttrOi tuqng
dgngv6i dungdich NaOH Ou,loc 16ytodnb0 k0t ttia nungtrong kh6ngkhi d6n
f,ftOng
- d6i thi kh6i lugng ch6trin thu dugclir
D' 10,7g'
C' 8,2g'
B. 9 g.
A. 16g.
dugc3,136
cfru 90.cho I 1,2 gh6nhqpcu.'a nrnloai M t6cdgngv6i dungdichHCI du thu
3,92
lit (dktc).ctng to-i,"gh6n'hqpndy chot6c dgngh6tv6i dungdich HNo: lo6ngthu dugc
ft t
C. Me ho{c Fe.
.t. Mg. B. F;.
dung dich
Cflu 93. Cho dung dich X chria 6,1 m.ol FeClz,0,2 mol FeSOa.ttrc tich
KMnO+g,BMtroniHzSO+lodngvira dir d6 oxi h6ah6t c6cch6ttrong X ld:
A.0,075lit.8.0,125\it.c.0,3lit.D'0'03lit'
hqp
ciu 95.Khft 16 gFezO:U"trgr.tti co 6 nhietdQcaothu tlugclo" lry r.hnx, cho.h6n
tictr ktri
xticdung v6i dung dich HNo: du thu dugc l,l2 ritkhi No duy nhSt(dktc).ttrc
COz(dktc)t4ora khi khri FezO:ld
A.1,68lit.B.6,72lit'.c.3,361it'D'l,rzlit'
Ciu 100.Chia 10 g h6n hgrpgdm (Mg, Al, Zn) thdnh2 phdnbAngnha1.
pht; I duqcd6t ,h6y hoatrl*n trongOzdu thu dugc2l g h5n hgp oxit.
ph6nhai hdatan trongHNOr ttac,n6"ngdu thu dugcv (lit Noz (spk duy nh6t,6 dktc)'
Gi6 tri criaV ld
D'30,8'
c. 89,6.
8.44,8.
A.22,4.
Hzsor dac,
c6u 10L.Cho 36 g h6n hqp Fe, FeO,Fe:O+t6c dunghodntodnv6i dung,dich
ttSy trtoit ra 5,6'lit khi Soz o dktc (sin phAmkhri duy nhdt).Tinh s6 mol
;G;
dA Phanimg.
HzSO+
D' 0'75mol'
C'1,5mol'
8.1 mol.
A. 0,5mol.
Cao fOO.dniu frfr,"hqp g6m Mg vd MgO thdnh2 phdnbing nhau:
dungdfchsauphan
phA"l ' Ct o ta. oung'ttciu6'idungoictruct thu dugc3,136lit Hz(elktc),
img chrial4,21gmudi
phAn2: Cho t6c jo"t^fr6, vdi dungdich HNO: thu dugc 0,448lit khi X. nguy€nctr6t1Ct
b; .u" ril th4nvi li'm kn6 dungdi.h tuu ph6nring thu dugc 23 g mu6i. COngthric
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