Inorganic Chemistry - What's the Order of Oxidising Strength of the Oxyacids of Chlorine_ -...
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What'stheorderofoxidisingstrengthoftheoxyacidsofChlorine?
WhatIhavebeentoldisthatthe ofthefouroxyacidsofChlorineincreaseintheorder .acidity )0$M )0$M
)0$M
)0$M
Ihavealsobeentoldthattheoxidisingstrengthgoesinthereverseorder.Inmyknowledgeacidicstrengthshouldincreasewithoxidisingstrength.WhereamIgoingwrong?
Foryourreference,theKavaluesoftheacidsareasfollows:
1. )0$M g
2. g)0$M
3. g)0$M
4. g)0$M
inorganicchemistry periodictrends
editedAug29at12:57BenNorris13.2k 19 60
askedAug29at9:23user762416 1
1 Don'tyoumeantheoxyacids ,)$M0 ,)$M0
,and)$M0
?)$M0
Philipp Aug29at12:31
1Answer
Formanyacids,theproton istheoxidizingagent.Forexample,intheoxidationofzincwith,theoxidizingagentis .)
)$M )
;O )
;O
)
However,forsomeacids,theconjugatebase(anion)isalsoanoxidant(andusuallyamorepowerfuloxidantthan .Theoxyacidsofchlorinearealloxidizingagentsthroughtheiranions,asisnitricacidandsomeothers:)
;O 0 )
0$M
;O
)
$M
Intheaboveexample,hypochloriteistheoxidizingagent.Fortheoxyacidsofchlorineandothers,thestrengthoftheoxidizingagentisindependentofthestrengthoftheacid.
answeredAug29at13:06BenNorris13.2k 19 60
Whyexactlywouldtheprotonoftentimesbeaweakoxidizerandwhyexactlywouldtheconjugatebasessometimesbegoodoxidizers?Isn'ttheformationofH2entropicallyfavorable? Dissenter Aug29at16:07
Formationof isentropicallyfavorable,butsoisconversionof)
to )0$M (threeparticlesfrom2).Additionally,youcannotignorethecontributiontospontaneityfrom .0)
$M
enthalpy BenNorris Aug30at13:25