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  • Need explanation for: Acidity of diprotic acids in aqueous solutions increase in the order:

Acidity of diprotic acids in aqueous solutions increase in the order:

  • Option 1)

    H2S < H2Se < H2Te

  • Option 2)

    H2Se < H2S > H2Te

  • Option 3)

    H2Te < H2S < H2Se

  • Option 4)

    H2Se < H2Te < H2S

 

Answers (1)

best_answer

As we learned in concept

The strength of acids is directly proportional to the stability of its conjugate bases.

Order of stability:

HT_{e}^{-}\:> \:HS_{e}^{-}\:> \:HS^{-}

due to greater delocalization of -ve charge on account of size

\therefore order of acidity

H_{2}T_{e}\:> \:H_{2}S_{e}\:> \:H_{2}S


Option 1)

H2S < H2Se < H2Te

This option is correct.

Option 2)

H2Se < H2S > H2Te

This option is incorrect.

Option 3)

H2Te < H2S < H2Se

This option is incorrect.

Option 4)

H2Se < H2Te < H2S

This option is incorrect.

Posted by

divya.saini

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