Some statements about Leclanché cell are:(I) | vedclass

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(A) In a Leclanché cell:$1$. The anode is a zinc container $(Zn_{(s)} \rightarrow Zn^{2+} + 2e^-)$,so statement $(I)$ is correct.$2$. The cathode is a

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$I$ & $II$ only

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(A) In a Leclanché cell:$1$. The anode is a zinc container $(Zn_{(s)} \rightarrow Zn^{2+} + 2e^-)$,so statement $(I)$ is correct.$2$. The cathode is a graphite rod surrounded by powdered $MnO_2$ and carbon,so statement $(II)$ is correct.$3$. The electrolyte is a moist paste of $NH_4Cl$ and $ZnCl_2$,not $ZnO$ and $KOH$. Thus,statement $(III)$ is incorrect.$4$. The oxidation product involves $Zn^{2+}$ ions,not $ZnO$. Thus,statement $(IV)$ is incorrect.Therefore,only statements $(I)$ and $(II)$ are correct.

Some statements about Leclanché cell are:
$(I)$ Anode is zinc metal
$(II)$ Cathode is graphite rod surrounded by powdered $MnO_2$ and carbon
$(III)$ Electrolyte is a moist paste of $ZnO$ and $KOH$
$(IV)$ Oxidation product is $ZnO$
The correct statements are:

Similar Questions

$A^{2+}_{(aq.)} + 2e^- \to A_{(s)}$ ; $E^{\circ} = 0.8 \ V$
$B^{3+}_{(aq.)} + 3e^- \to B_{(s)}$ ; $E^{\circ} = 0.6 \ V$
Using the above information,find the ion which will be deposited first at the cathode if a solution containing $A^{2+}_{(aq.)}$ and $B^{3+}_{(aq.)}$ is electrolysed.

Which relation is correct for $\Lambda^0_{m(H_2O)}$?

Which of the following statements is correct?

Which of the following net cell reactions takes place in a galvanic cell containing a copper electrode and a standard hydrogen electrode $(SHE)$? Given: $E^{\circ}(Cu^{2+}_{(aq)} \mid Cu_{(s)}) = +0.34 \ V$.

Write a note on mercury cell $(Zn-Hg)$.

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Some statements about Leclanché cell are:$(I)$ Anode is zinc metal$(II)$ Cathode is graphite rod surrounded by powdered $MnO_2$ and carbon$(III)$ Electrolyte is a moist paste of $ZnO$ and $KOH$$(IV)$ Oxidation product is $ZnO$The correct statements are: