NEETChemistryElectrochemistry
Assertion (A) : A current of 96.5 ~A is passed into aqueous AgNO ₃ solution for 100 ~s . The weight of silver deposited is 10.8 ~g (At. wt. of Ag =108) Reason (R) : The mass of a substance deposited during the electrolysis of an electrolyte is inversely proportional to the quantity of electricity passing through the electrolyte. The correct answer is :
Options
- ABoth (A) and (R) are true and (R) is the correct explanation of (A)
- BBoth (A) and (R) are true but (R) is not the correct explanation of (A)
- C(A) is true but (R) is false
- D(A) is false but (R) is true
Correct answer
C. (A) is true but (R) is false
Step-by-step solution
i=96.5 ~A , t=100 ~s w=108Q=i tQ=96.5 100=9650 C 96500 coulomb deposited wt. of Ag =108 ~g 9650 coulomb deposited wt. of Ag = 108 9650 96500 So, statement A is true but R is false. R is false because mass of substance deposited is directly proportional to the quantity of electricity.