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Given the standard electrode potentials,...

Given the standard electrode potentials,
`K^(+)//K=-2.93V,Ag^(+)//Ag=0.80V`
`Hg^(2+)//Hg=0.79V`
`Mg^(2+)//Mg=-2.37V,Cr^(3+)//Cr=-0.74V`
arrange these metals in their increasing order of reducing power.

Text Solution

Verified by Experts

As reduction potential is more positive, then it is strong reducing agent. Increasing reduction potential series is : `K^(+)//K(-293V),Mg^(+2)//Mg(-2.37V),Cr^(3+)//Cr(-0.74V),Hg^(+2)//Hg(0.79V),Ag^(+)//Ag(0.80V)`
Increasing order of reducing power is as under :
Ag, Hg, Cr, Mg, k
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Knowledge Check

  • Which is increasing order of the reducing power of the following metals on the basis of standard electrode potential ? Ag^(+)//Ag=0.80 V " "Mg^(2+)//Mg=-2.37V Hg^(2+)//Hg=0.79V" "Cr^(3+)//Cr=-0.74V

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