Question

Assertion: Zn is able to displace Ag from AgNO${}_3$ solution.

Reason: The standard oxidation electrode potential of Zn is more positive than that of Ag.

• A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion
  
• B. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
  
• C. Assertion is true but Reason is false
• D. Assertion is false but Reason is true
  
• E. Both Assertion and Reason are false
  

Answer 1

The correct option is A Both Assertion and Reason are true and Reason is the correct explanation of Assertion

Zn is able to displace Ag from AgNO${}_3$ solution because its standard oxidation electrode potential is more positive than that of Ag.
$Zn+A{g}^{+}\to Z{n}^{+}+Ag$
The standard oxidation potential of zinc is 0.763 V.
The standard oxidation potential of silver is -0.799 V..
More positive standard oxidation potential of zinc makes it better reducing agent. Hence, it can reduce $A{g}^{+}$ to Ag.