The extent of H-bonding is greater in \(1^{o}\) than \(2^{o}\) and \(3^{o}\) amines

Which of the following order is correct for strength and extent of H-bonding between H_(2)O and H_(2)O_(2) respectively:

The correct order of O - O bond length in O_(2),H_(2)O_(2) and O_(3) is

Statement-1: The enthalpy of formation of H_(2)O(l)is greater than of H_(2)O(g) in magnitude. Statement -2: Enthalpy chnge Is negative for the condensation reaction H_(2)O(g)toH_(2)O(l)

How many nodal planes are present in the following MO's (Taking Z-axis as the internuclear axis) (i) sigma ls (ii) sigma^(**) ls (iii) sigma2p_(z) (iv) sigma^(**)2p_(z) (v) pi 2p_(y) (vi) pi^(**)2p_(x) or pi^(**)2p_(y) Give the number of electrons which occupy the bonding orbitals in H_(2)^(o+) H_(2) and O_(2)^(o+) (c ) Why N_(2) has greater bond dissociation energey than N_(2)^(o+) whereas O_(2)^(o+) has greater bond dissociation energy than O_(2) .

The standard molar enthalpies of formation of H_(2)O(l) " and " H_(2)O_(2)(l) are -286 and -188 "kJ"//"mol", respectively. Molar enthalpies of vaporisation of H_(2)O(l) " and "H_(2)O_(2)(l) are 44 and 53 kJ respectively. The bond dissociation enthalpy of O_(2)(g) is 498 "kJ"//"mol" . calculate the bond dissociation enthalphy ("in" "kJ"//"mol" ) of O-O bond in H_(2)O_(2) , assuming that the bond dissociation ethalpy of O-H bond is same in both H_(2) " and " H_(2)O_(2) .