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Question

(A) The chemical reactivity of metals with water is determined by their position in the electrochemical series. Metals with more negative standard red

Vedclass · Accepted Answer

$K > Mg > Zn > Cu$

Vedclass · Answer

(A) The chemical reactivity of metals with water is determined by their position in the electrochemical series. Metals with more negative standard reduction potentials are more reactive. The standard reduction potentials $(E^{\circ})$ are: $K^+/K = -2.93 \ V$,$Mg^{2+}/Mg = -2.37 \ V$,$Zn^{2+}/Zn = -0.76 \ V$,and $Cu^{2+}/Cu = +0.34 \ V$. Since the reactivity decreases as the reduction potential increases,the correct order of reactivity is $K > Mg > Zn > Cu$.

What is the correct order of chemical reactivity with water according to the electrochemical series?

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