ChemistryWhich of the following compounds is alkaline in an aqueous medium?

Which of the following compounds is alkaline in an aqueous medium?


  1. A
    Na2CO3
  2. B
    NaCl
  3. C
    H2CO3
  4. D
    CuSO4 

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    Solution:

    Na2CO3 is alkaline in an aqueous medium.
    In an aqueous solution, Na2CO3 converts into NaOH and H2CO3, which is alkaline. Whereas other elements in aqueous do not give a base as a product, so they are not alkaline. The said reaction can be represented as:
    Na2CO3 + 2H2O → 2NaOH + H2CO3
      

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