$A$ cell reaction is spontaneous when

During discharging,the change taking place at the cathode in a lead accumulator is:

What is the correct cell representation for the reaction $2Br^{-}_{(aq)} + Cl_{2(g)} \rightarrow Br_{2(l)} + 2Cl^{-}_{(aq)}$?

Write reactions for the followings :
$1.$ Anode reaction of dry cell.
$2.$ Reduction reaction of dry cell.

Fill in the blanks :
$1$. Standard potential of Daniell cell is $\dots$ volt.
$2$. In Daniell cell,chemical energy is converted into $\dots$ energy.
$3$. In Daniell cell,$\dots$ is anode and $\dots$ is cathode.

When does an electrochemical cell behave as an electrolytic cell?