Verified Solution • 2025–26 Session moderate

QAIPMT-2009-Ch-2103: NEET 2009 Chemistry - Class 12 AIPMT-2009-Ch-2103 Solution: \(Al_2O_3\) is reduced by electrolysis at low potentials and…

Al2O3Al_2O_3 is reduced by electrolysis at low potentials and high currents. If 4.0×1044.0\times10^4 amperes of current is passed through molten Al2O3Al_2O_3 for 6 hours, what mass of aluminium is produced? (Assume 100% current efficiency, at mass of Al = 27 g mol−1^{-1}).

Multiple Choice Options

  • A 8.1×1048.1\times10^4 g
  • B 2.4×1052.4\times10^5 g
  • C 1.3×1041.3\times10^4 g
  • D 9.0×1039.0\times10^3 g

Step-by-Step Verified Solution

E = Z _ 96500 _ 27 3 = Z _ 96500 _ Z = 9 96500 Now applying the formula, W = Z _ I _ t W = 9 96500 _ 4 _ 10 4 _ 6 _ 60 _ 60 = 8.1 _ 10 4 g

Related Learning Resources & Exam Preparation

NEET PYQ Question Bank
Browse year-wise authentic previous years' questions with solutions
Authentic CBT Mock Tests
Simulate official exam environment with live timer and percentile scoring