Question

why anode is negative in Daniel cell​

Answer 1

ANSWER :

Anode is negative in Daniel cell because of oxidation of the electrode for the given interphase of Electrode and Electrolyte

Explanation:

For example take a Daniel cell, due to E(Reduction potential) of Zn is lower than Cu, the Electrode made up of Zn Oxidises , i.e, the electrode loses Zn in the form of Zn^+2 ions into electrolyte. This leads to accumulation of electrons on the Anode making it Negatively Charged.

TIPS: For Electrochemical cell ,

LOAN - LEFT OXIDATION ANODE NEGATIVE

For Electrolytic cell,

POA - POSITIVE OXIDATION ANODE

Answer 2

$\huge\mathfrak{Answer:-}$

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• Daniel cell is an example of galvanic or electrochemical cell.

• It is basically Zn-Cu cell.

• The anode is the oxidation half of the cell.

• It is taken as negative. Here, Zn oxidises to Zn^+2 and two electrons.

• The cathode is the reduction half of the cell.

• It is taken as positive because here Cu^+2 reduces to Cu.

• Also a salt bridge is taken in middle

• It maintains electrical neutrality of cells.

• It completes the current by allowing flow of electrons.

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$\huge\mathfrak{Thank you}$