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P^(K(a)) of O(2)N-CH(2)COOH is 1.68. How...

`P^(K_(a))` of `O_(2)N-CH_(2)COOH` is 1.68. How many compounds given below have a pKa value greater than 1.68
`" "underset((I))(CH_(3)COOH)" "underset((II))(Cl-CH_(2)COOH)" "underset((III))(Cl-underset(underset(Cl)(|))overset(overset(Cl)(|))(C)-COOH)" "underset((IV))(O_(2)N-CH_(2)CH_(2)COOH)`
`" "underset((V))(H_(3)C-overset(overset(O)(||))(C)-COOH)" "(##AKS_ELT_AO_CHE_XI_V01_D_C03_E02_029_Q01.png" width="80%">

Text Solution

Verified by Experts

The correct Answer is:
5
Excep `CCl_3 - COOH` all other five compounds are w.r than nitro acetic acid
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