Calculate the percentage of histidine that has its imidazole side chain protonated at pH 7.3. The pKa values for histidine are pK1 = 1.8, pK2 (imidazole) = 6.0, and pK3 = 9.2.

TLS Online TPP Program

#Question id: 20234

#XL - P Chemistry

Match the following and choose the correct Answer

Column - I	Column -II
(i) sp3d2	(a) Ni[(CN)4]2-
(ii) sp3d	(b) SnCl2
(iii) dsp2	(c) ICl4-
(iv) sp2	(d) TeCl4

TLS Online TPP Program

#Question id: 20235

#XL - P Chemistry

Among the following compounds, the one that is polar and has the central atom with sp² hyridisation is

TLS Online TPP Program

#Question id: 20236

#XL - P Chemistry

Match the following

Set A	Set B
(1) stability of bond	(p) Bond energy
(2) Molecular orbital theory	(q) Bond order
(3) octet rule	(r) Variable Valency
(4) Valence bond theory	(s) Electronic concept of valency

TLS Online TPP Program

#Question id: 20237

#XL - P Chemistry

Bond strength increases with

TLS Online TPP Program

#Question id: 20238

#XL - P Chemistry

O₂⁺² will have

TLS Online TPP Program

#Question id: 20239

#XL - P Chemistry

In a molecule number of electrons in BMO are more as compared to ABMO, hence