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NEET CHEMISTRYMedium

In producing chlorine through electrolysis, 100 W power at 125 V is being consumed. The liberation of chlorine per min is: (ECE of chlorine is 0.367×106 kg/C0.367 \times 10^{-6} \text{ kg/C})

A

17.6 mg

B

21.3 mg

C

24.3 mg

D

13.6 mg

Step-by-Step Solution

Given: Power (PP) = 100 W Voltage (VV) = 125 V Time (tt) = 1 min = 60 s Electrochemical Equivalent (ZZ) = 0.367×106 kg C1=0.367 mg C10.367 \times 10^{-6} \text{ kg C}^{-1} = 0.367 \text{ mg C}^{-1}

First, we find the current (II) using the relation P=VIP = VI: I=PV=100125=0.8 AI = \frac{P}{V} = \frac{100}{125} = 0.8 \text{ A}

Now, calculate the total charge (QQ) passed in 1 minute (60 seconds): Q=I×t=0.8 A×60 s=48 CQ = I \times t = 0.8 \text{ A} \times 60 \text{ s} = 48 \text{ C}

According to Faraday's First Law of Electrolysis, the mass (mm) liberated is given by: m=Z×Qm = Z \times Q m=(0.367×106 kg C1)×48 Cm = (0.367 \times 10^{-6} \text{ kg C}^{-1}) \times 48 \text{ C} m=17.616×106 kgm = 17.616 \times 10^{-6} \text{ kg}

Converting kilograms to milligrams: m=17.616×106×106 mg17.6 mgm = 17.616 \times 10^{-6} \times 10^{6} \text{ mg} \approx 17.6 \text{ mg}

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