Question
Why chlorine has higher or lower electron gain enthalpy than Fluorine.
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$\text{Cu}|\text{Cu}^{2+}\text{(aq)}\|\text{Ag}^+\text{(aq)}|\text{Ag}$
If its two half cells work under standard conditions, calculate the emf of the cell.
$\Big[\text{Given E}^\circ_{\frac{\text{Cu}^{2+}}{\text{Cu}}}=+0.34\text{V},\text{E}^\circ_{\frac{\text{Ag}^+}{\text{Ag}}}=+0.80\text{V}\Big]$

Assertion: An isolated system is the one which can neither exchange matter nor energy with the surroundings.
Reason: It should be noted that every system is perfectly isolated.NaNO2