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Karnataka Board PUCPUC Science 2nd PUC Class 12

Assertion: EAg+Ag increases with increase in concentration of Ag+ ions. Reason: EAg+Ag has a positive value.

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Question

Assertion: `"E"_("Ag"^+ //"Ag")` increases with increase in concentration of Ag+ ions.

Reason: `"E"_("Ag"^+ //"Ag")` has a positive value.

Options

  • Both assertion and reason are true and the reason is the correct explanation of assertion.

  • Both assertion and reason are true and the reason is not the correct explanation of assertion. 

  • Assertion is true but the reason is false.

  • Both assertion and reason are false.

  • Assertion is false but reason is true.

MCQ
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Solution

Both assertion and reason are true and the reason is not the correct explanation of assertion. 

Explanation:

\[\ce{Ag- + e- -> Ag}\]

`"E"_("Ag"^+//"Ag") = "E"_("Ag"^+//"Ag")^0 - 0.059/1 log  1/(["Ag"^+])`

= `"E"_("Ag"^+//"Ag")^0 + 0.059["Ag"^+]`

On increasing \[\ce{[Ag+], E_{Ag^+/Ag}}\] will increase and it has a positive value.

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Chapter 3: Electrochemistry - Exercises [Page 42]

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NCERT Exemplar Chemistry Exemplar [English] Class 12
Chapter 3 Electrochemistry
Exercises | Q V. 64. | Page 42

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