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उच्च धारा और निम्न विभव पर विधुत - अपघटन द्वारा `Al_(2)O_(3)` को अपचयित किया जाता है यदि गलित `Al_(2)O_(3)` में से `4.0xx10^(4)` ऐम्पियर की धारा 6 घंटे के लिए प्रवाहित की जाती है तो ऐलुमिनियम का कितना द्रव्यमान उत्पादित होता है? (धारा दक्षता को `100%` मानिए Al का परमाणु द्रव्यमान `=27" ग्राम मोल"^(-1)`)
A. `9.0xx10^(3)` ग्राम
B. `8.1xx10^(4)` ग्राम
C. `2.4xx10^(5)` ग्राम
D. `1.3xx10^(4)` ग्राम

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Best answer
`(Al^(3+))_(2)+6eto2Al" "(E_(Al)=M//3)`
`w=(Exxixxt)/(96500)=(27//3xx4xx10^(4)xx6xx60xx60)/(96500)`
`=8.05xx10^(4)`g

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