An organic liquid A containing C, H and O has a pleasant odour with a boiling point of 78oC. On boiling A with conc. H₂SO₄ a colourless gas is produced which decolourises bromine water and alkaline KMnO₄. One mole of this gas also takes one mole of H₂ . The organic liquid A is
The unit ohm-1 is used for
(i) C + O₂ → CO₂ ; ∆Ho = − xkJ,
(ii) 2CO + O₂ → 2CO₂ ; ∆Ho = −ykJ .
The enthalpy of formation of carbon monoxide will be
At 25oC, the value of a solution is 6. The solution is
In the following, electrophile is:
HO ― NO2
The outer electronic configuration of Techitium (Z = 43) is ___
Techanitium (At. no.43) shows preference for half-filled configuration.
Out of X-rays, infra red rays, visible rays and micro waves, the largest frequency is of ___
In general, radiowaves have maximum wave length and minimum frequency while cosmic rays have minimum wavelength and maximum frequency. The order of increasing frequency is Radio < Micro < IR < Visible < UV < X-rays < γ-rays < Cosmic rays.
The theory that links thermodynamics with chemical kinetics is__
In exothermic reaction,
In exothermic reactions ΔH < 0
The latest technique used for purification of organic compounds is
The IUPAC name of [ Ni(NH3)4] [ NiCl4 ] is :