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Karnataka Board PUCPUC Science 2nd PUC Class 12

What does the negative sign in the expression EΘZn2+Zn = − 0.76 V mean? - Chemistry

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Question

What does the negative sign in the expression `"E"^Θ ("Zn"^(2+))//("Zn")` = − 0.76 V mean?

Short/Brief Note
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Solution

`"E"^Θ ("Zn"^(2+))//("Zn")` = − 0.76 V

Negative sign shows that the reducing power of zinc is greater than that of hydrogen.

\[\ce{Zn + H2SO4 -> ZnSO4 + H2}\]

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Chapter 3: Electrochemistry - Exercises [Page 39]

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NCERT Exemplar Chemistry [English] Class 12
Chapter 3 Electrochemistry
Exercises | Q III. 31. | Page 39

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