Electrochemistry
A current of $$ 5 $$ ampere is flowing through a wire for $$ 193 $$ seconds . Calculate the number of electrons flowing through the cross section of wire for $$ 193 $$ seconds .
Electrons are getting added to an element Y : what charge will Y migrate to during the process of electrolysis?
Y will acquire a negative change after electrons are added into it. So, it will migrate, to positive charge during the process of electrolysis.
A current of $$ 5 $$ ampere is flowing through a wire for $$ 193 $$ seconds . Calculate the number of electrons flowing through the cross section of wire for $$ 193 $$ seconds .
Consider the figure given above and answer the question : Is silver plate the anode or cathode ?
The electrochemical cell given alongside converts the chemical energy released during the redox reaction . $$ Zn(s) + Cu^{2+} (aq) \rightarrow Zn^{2+}(aq) + Cu(s) $$ to electrical energy . It gives an electrical potential of $$ 1.1\,V $$ when concentration $$ Zn^{2+} $$ and $$ Cu^{2+} $$ ions is unity . State the direction of flow of current and also specify whether zinc and copper are deposited of dissolved at their respective electrodes when : An external opposite potential of less than $$ 1.1 \,V $$ is applied .
The electrochemical cell given alongside converts the chemical energy released during the redox reaction . $$ Zn(s) + Cu^{2+} (aq) \rightarrow Zn^{2+}(aq) + Cu(s) $$ to electrical energy . It gives an electrical potential of $$ 1.1\,V $$ when concentration $$ Zn^{2+} $$ and $$ Cu^{2+} $$ ions is unity . State the direction of flow of current and also specify whether zinc and copper are deposited of dissolved at their respective electrodes when : An external potential of $$ 1.1 \,V $$ is applied .
The electrochemical cell given alongside converts the chemical energy released during the redox reaction . $$ Zn(s) + Cu^{2+} (aq) \rightarrow Zn^{2+}(aq) + Cu(s) $$ to electrical energy . It gives an electrical potential of $$ 1.1\,V $$ when concentration $$ Zn^{2+} $$ and $$ Cu^{2+} $$ ions is unity . State the direction of flow of current and also specify whether zinc and copper are deposited of dissolved at their respective electrodes when : An external potential of greater than $$ 1.1 \,V $$ is applied .
Explain how electrolysis is an example of redox reaction.
Calculate the number of electrons lost or gained during electrolysis of : $$ (a) \, 2g \,Br^{-} $$ ions , $$ (b)\, 1g \,Cu^{2+} $$ ions .
If the current is passed into the solution of an electrolyte
When $$50\%$$ solution of $$H_{2}SO_{4}$$ is electrolysed by passing a current of high density at low temperature then main products of electrolysis are
The electrolysis of cold sodium chloride solution produces sodium hypochlorite by reacting NaOH and Cl$$_{2} $$ thoroughly. How long (in days) will a cell operate to produce 10 L of 7.45 % (by mass) solution of NaClO if the cell current is 2.5 A? Assume that the density of solution is 1.0 g/ml.