These question consist of two statements each, printed as Assertion and Reason. While answering these questions you are required to choose any one of the following four responses :
`Ni//Ni^(2+) (1.0 M) || Au^(3+) (1.0 M) | Au`, for this cell emf is `1. 75 V` if ` E_(Au^(3+)//Au)^@ =1.50 ` and ` E_(Ni^(3+)//Ni)^2 =0.25 V`.
Emf of the cell ` =E_("cathode")^@- E_("anode")^@`.

Options

A. If both the assertion and reason are true but the reason is the correct explanation of assertion
B. If both the assertion and reason are true but the reason is not the correct explanation of assertion.
C. If the assertion is true but reason is false.
D. If assertion is false but reason is rue

Answer

A

Explanation

Both assertion and reason are true and reason is the correct explanation of the assertion.
` E_(Au^(3+)//Au)^@ - E_(Ni//Ni^(2+)) = 1.50 - (-0. 25) = 1. 75 V`.