1-Phenylethanol can be prepared by the reaction of benzaldehyde with
Which of the following sequence is correct as per Aufbau principle?
Which is a planar molecule?
Sodium nitroprusside reacts with sulphide ion to give a purple colour due to the formation of :
In a polymer 30% molecules have molecular weight 20,000, 40% molecules have molecular weight 30,000 and the rest 30% molecules have molecular weight 60000. The weight average molecular weight of the polymer is
In the following reaction sequence, the correct structures of E, F and G are
Among the following metal carbonyls, the C ― O bond order is lowest in
An anionic carbonyl complex can delocalise more electron density to antibonding π - orbital (dπ - pπ back -bonding) of CO and thus lower the bond order.
A positron is emited from 2311Na . The ratio of the atomic mass and atomic number of the resulting nuclide is
The species having bond order different from that in CO is
On the basis of the following thermochemical data:
Δ f G0 H+ aq = 0 .
H2O(l) → H+ (aq) + OH- (aq) ; Δ H = 57.32 k J
H2 g + 1/2 O2 g → H2O(l) ; Δ H = − 286.2 k J
The value of enthalpy of formation of OH - ion at 250C is
The main product in the above reaction is