Chemistry 2 Marks Questions

The high melting points of transition metals are due to strong metallic bonds between the atoms of these elements This is because of involvements of a greater number of electrons in the interatomic metallic bonding from (n-1)d orbitals in addition to ns electrons in the interatomic molecular bonding.

Linkage isomerism- arises in a coordinated compound containing ambidentate ligand
Examples.

Answer the following:
(i) First order.
(ii) Elementary reactions have the same value of order and molecularity because the elementary reaction proceeds in a single step.

i. Reverse osmosis (direction of osmosis is reversed) occurs i.e. net flow of the solvent is from solution to solvent. Hence greater pressure is applied to the solvent molecules from the solution side would move into the pure solvent through a semipermeable membrane.
ii. When acetone is added to the ethanol, molecules of acetone get in between the molecules of ethanol and break some of the hydrogen bond, which weakens the intermolecular attractive forces resulting in an increase in vapor pressure of the mixture than ethanol in a pure state.