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![[Post New]](/templates/default/images/icon_minipost_new.gif) 29 Apr 2008 11:50:16 IST
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Hydrogen acts as an oxidising agent in its reaction with
(a) bromine (b) calcium
(c) nitrogen (d) sulphur
give explaination
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29 Apr 2008 11:53:45 IST
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answers nitrogen
the reaction that takes place is
H2 + N2 ---------> NH3
now NH3 is a hydride
so OS of H of -1
so decrease in OS is reduction and the substance is called oxidizing agent
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29 Apr 2008 11:56:48 IST
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I guess its not the case with every hydride:example H2S its oxidation state is +1..only with high electropositive elements like NaH,CaH2 etc. it is -1.
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29 Apr 2008 11:57:38 IST
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So,here i think it must be calcium .
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29 Apr 2008 11:58:33 IST
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[b],
coz ,alkaline earth metals rct with Hydrogen to form CaH2 .
o,s from 0 to +2 hence oxidation .
do rate if correct ...............
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yup i got it wrong
the answer is calcium
hydrogen reacts with elements to form hydrides
hydrides react with EP elements to form hydrides where their is increase in OS
and in case of EN elements the OS does not change
@risin , thanx for showing my mistake
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1 May 2008 00:15:30 IST
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hi ur ans will be CaH2 ;
its confirm bcoz only but two grps can makes hallides due to their high tendeny to loose the e`..... if im right then make me know it...
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