In a Daniel cell,...

In a Daniel cell,

The chemcial energy liberated during the redox reactioin is converted to electrical energy

The electrical energy of the cell is converted to chemical energy

The energy of the cell is utilised in conduction of the redox reaction

The potential energy of the cell is converted into electrical energy

Text Solution

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The correct Answer is:

The conversion of the chemical energy liberated during energy liberated during redox, reaction to electrical energy is done by Daniel cell and has an electrode potential of 1.1 V.
`Zn_(s) + Cu_(s)^(2+) to Zn^(2+) + Cu_(s)`

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In a Daniell cell, when a Za electrode and a Cu electrode ane connected with a wire

electrons flow from the Zn electrode to the Cu electrode through the wire

electrons flow from the Cu electrode to the Zn electrode through the wire

current flow from the Zn electrode to the cu electrode through the wire

electrons flow from the Zn electrode to the cu electrode through the cell

Assertion (A) : In a Daniell cell, if the concentration of Cu^(2+) and Zn^(2+) ions are doubled, the EMF of the cell will be doubled. Reason (R) : If the concentration of ions in contact with metals is doubled, the electrode potential is doubled.

If both `(A)` and `(R)` are correct, and `(R)` is the correct explanation of `(A)`.

If both `(A)` and `(R)` are correct, but `(R)` is not the correct explanation of `(A)`.

If `(A)` is correct, but `(R)` is incorrect.

If `(A)` is incorrect, `(R)` is correct.

When a Daniel cell is connected in the secondary circuit of a potentiometer, the balancing length is found to be 540 cm. If the balancing length becomes 500 cm. When the cell is short-circuited with 1Omega , the internal resistance of the cell is

`0.08 Omega`

`0.04 Omega`

`1.08 Omega`

`1.45 Omega`