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  • I have a doubt, kindly clarify. In which of the following arrangements the given sequence is not strictly according to the property indicated against it?

In which of the following arrangements the given sequence is not strictly according to the property indicated against it?

  • Option 1)

    H2O <H2S <H2Se < H2Te : increasing pKa values

  • Option 2)

    NH3 < PH3 < AsH3 < SbH3 : increasing acidic character

  • Option 3)

    CO2 < SiO2 < SnO2 < PbO2 : increasing oxidising power.

  • Option 4)

    HF < HCI < HBr < HI : increasing acidic strength

 

Answers (1)

pk_{a}  values should decrease with increasing acidity Acdic strength \alpha  stability of conjugate base H_{2} T_{e} < H_{2} S_{e} < H_{2}S< H_{2}O

in P K_{a}  values.


Option 1)

H2O <H2S <H2Se < H2Te : increasing pKa values

Correct option

Option 2)

NH3 < PH3 < AsH3 < SbH3 : increasing acidic character

Incorrect option

Option 3)

CO2 < SiO2 < SnO2 < PbO2 : increasing oxidising power.

Incorrect option

Option 4)

HF < HCI < HBr < HI : increasing acidic strength

Incorrect option

Posted by

Sabhrant Ambastha

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