An unknown mtal, M, and its salt, `M(NO_(3)_(2)`are combined with a half-cell in which the following reaction occurs: `2Ag^(+) + M rightarrow 2Ag + M^(2+)` `Ag^(+)(aq) + e(-) rightarrow Ag(s)` `[E_(red)^(@) = 0.80V] If `E_(cell)^(@)` = 1.36V, what is `E_(red)^(@)` for `M^(2+)(aq) + 2e^(-) rightarrow M(s)`?A. 0.56VB. 0.24VC. `-0.24V`D. `-0.56V`

An unknown mtal, M, and its salt, `M(NO_(3)_(2)`are combined with a ha

1.	An unknown mtal, M, and its salt, `M(NO_(3)_(2)`are combined with a half-cell in which the following reaction occurs: `2Ag^(+) + M rightarrow 2Ag + M^(2+)` `Ag^(+)(aq) + e(-) rightarrow Ag(s)` `[E_(red)^(@) = 0.80V] If `E_(cell)^(@)` = 1.36V, what is `E_(red)^(@)` for `M^(2+)(aq) + 2e^(-) rightarrow M(s)`?A. 0.56VB. 0.24VC. `-0.24V`D. `-0.56V`
Answer» Correct Answer - D

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The EMF of the following cell: `Zn| Zn^(2+)(0.1M) || Cl^(-)(0.01M) | AgCl | Ag` is: [Given : E_(Zn^(2+)|/Zn)^(@) = -0.76V`, `E_(Cl^(-)| AgCl|Ag)^(@)` = 0.22 V`, `(2.303RT)/(F) = 0.06]`A. 0.96 VB. 0.345 VC. 1.23D. 1.13 V
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