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  4. How may litres of chlorine gas will be obtained by electrolysis of molten NaCl at 1.8 atm and 27° C ? The electrolysis continued for 9.65 sec using 1000 amp current.

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Q. How may litres of chlorine gas will be obtained by electrolysis of molten NaCl at 1.8 atm and $27^\circ C$ ? The electrolysis continued for 9.65 sec using 1000 amp current.

NTA AbhyasNTA Abhyas 2020Electrochemistry

Solution:

$W=\frac{I t E}{96500}$

$=\frac{1000 \times 9.65 \times 35.5}{96500}=3.55g$

Number of moles of chlorine obtained $=\frac{3.55}{71}=0.05$

$PV=nRT$

$1.8\times V=0.05\times 0.082\times 300$

$V=0.683$ L