Species acting as both Bronsted acid and base is

  • Option 1)

    (HSO4)-1

  • Option 2)

    Na2CO3

  • Option 3)

    NH3

  • Option 4)

    OH-1

 

Answers (1)

As we learnt in 

Bronsted - Lowry Acids and Bases -

According to bronsted lowry theory, acid is a substance that is capable of donating a hydrogen ion H+ and bases are substance that are capable of accepting H+ ion.

- wherein

NH_{3}+H_{2}O\rightleftharpoons NH_{4}^{+}+\bar{O}H


NH_{4}^{+}\rightarrow add\:proton

\bar{O}H\rightarrow lose \:proton

 The substance which can donate as well as accept H^{+} ion can acts as bronsted acid as well as bronsted base 

Example HSO-
HSO^{-}_{4}+H^{+}\rightarrow H_{2}SO_{4}

HSO_{4}^{-}\rightarrow H^{+}+SO_{4}^{2-}

 


Option 1)

(HSO4)-1

This option is correct 

Option 2)

Na2CO3

This option is incorrect 

Option 3)

NH3

This option is incorrect 

Option 4)

OH-1

This option is incorrect 

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