Problem: Using the activity series (refer to the following table), write balanced chemical equations for the following reactions. If no reaction occurs, simply write no reaction.Activity Series of Metals in Aqueous SolutionMetalOxidation ReactionLithiumLi( s )  →  Li+ ( aq ) + e-PotassiumK( s )  →  K +  ( aq ) + e-BariumBa( s )  →  Ba2 +  ( aq ) + 2e-CalciumCa( s )  →  Ca2 +  ( aq ) + 2e-SodiumNa( s )  →  Na +  ( aq ) + e-MagnesiumMg( s )  →  Mg2 +  ( aq ) + 2e-AluminumAl( s )  →  Al3 +  ( aq ) + 3e-ManganeseMn( s )  →  Mn2 +  ( aq ) + 2e-ZincZn( s )  →  Zn2 +  ( aq ) + 2e-ChromiumCr( s )  →  Cr3 +  ( aq ) + 3e-IronFe( s )  →  Fe2 +  ( aq ) + 2e-CobaltCo( s )  →  Co2 +  ( aq ) + 2e-NickelNi( s )  →  Ni2 +  ( aq ) + 2e-TinSn( s )  →  Sn2 +  ( aq ) + 2e-LeadPb( s )  →  Pb2 +  ( aq ) + 2e-HydrogenH2 ( g )  →  2H +  ( aq ) + 2e-CopperCu( s )  →  Cu2 +  ( aq ) + 2e-SilverAg( s )  →  Ag +  ( aq ) + e-MercuryHg( l )  →  Hg2 +  ( aq ) + 2e-PlatinumPt( s )  →  Pt2 +  ( aq ) + 2e-GoldAu( s )  →  Au3 +  ( aq ) + 3e-Chromium metal is immersed in an aqueous solution of cobalt(II) chloride.

FREE Expert Solution

We are asked to write a balanced chemical equation for the following reactions.

Chromium metal is immersed in an aqueous solution of cobalt(II) chloride.

Chromium metal → Cr(s)

cobalt(II) chloride → CoCl2(aq)


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Problem Details

Using the activity series (refer to the following table), write balanced chemical equations for the following reactions. If no reaction occurs, simply write no reaction.

Activity Series of Metals in Aqueous Solution

MetalOxidation Reaction
LithiumLi( s )  →  Li+ ( aq ) + e-
PotassiumK( s )  →  K +  ( aq ) + e-
BariumBa( s )  →  Ba2 +  ( aq ) + 2e-
CalciumCa( s )  →  Ca2 +  ( aq ) + 2e-
SodiumNa( s )  →  Na +  ( aq ) + e-
MagnesiumMg( s )  →  Mg2 +  ( aq ) + 2e-
AluminumAl( s )  →  Al3 +  ( aq ) + 3e-
ManganeseMn( s )  →  Mn2 +  ( aq ) + 2e-
ZincZn( s )  →  Zn2 +  ( aq ) + 2e-
ChromiumCr( s )  →  Cr3 +  ( aq ) + 3e-
IronFe( s )  →  Fe2 +  ( aq ) + 2e-
CobaltCo( s )  →  Co2 +  ( aq ) + 2e-
NickelNi( s )  →  Ni2 +  ( aq ) + 2e-
TinSn( s )  →  Sn2 +  ( aq ) + 2e-
LeadPb( s )  →  Pb2 +  ( aq ) + 2e-
HydrogenH2 ( g )  →  2H +  ( aq ) + 2e-
CopperCu( s )  →  Cu2 +  ( aq ) + 2e-
SilverAg( s )  →  Ag +  ( aq ) + e-
MercuryHg( l )  →  Hg2 +  ( aq ) + 2e-
PlatinumPt( s )  →  Pt2 +  ( aq ) + 2e-
GoldAu( s )  →  Au3 +  ( aq ) + 3e-

Chromium metal is immersed in an aqueous solution of cobalt(II) chloride.

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