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Question

When zeolite, which is hydrated sodium aluminium silicate, is treated with hard water the sodium ions are exchanged with

  1. straight H to the power of plusions    
  2.  Ca to the power of 2 plus end exponentions    
  3.  Mg to the power of 2 plus end exponentions    
  4. Both Ca to the power of 2 plus end exponent  and Mg to the power of 2 plus end exponent    

The correct answer is: Both Ca to the power of 2 plus end exponent  and Mg to the power of 2 plus end exponent


    Zeolite when treated with hard water exchange  Cu to the power of plus 2 end exponent times text  and  end text times Mg to the power of plus 2 end exponent timesions (present in hard water) with  Na to the power of plus ions.

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