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
Number of pyrimidine bases present both in DNA and RNA :
The equilibrium constant for the reaction,
CO (g) + H2O (g) ⇋ CO2 (g) + H2 (g)
is 5. How many moles of CO2 must be added to 1 litres container already containing 3 moles each of CO & H2O to make 2M equilibrium concentration of CO?
Density of dry air containing only N2 and O2 is 1.15 g/lit at 740 mm and 300 K. What is % composition of N2 by weight in the air?
What atomic number of an element 'X' would have to become so that the 4th orbit around X would fit inside the 1st Bohr orbit of H atom?
The most probable speed of 8 gm of H2 is 200 m/s avg. kinetic energy of H2 gas is:-