Minimum oxidation state shown by the lanthenoids is +2 .
The components of steel are :- Iron = 95% Carbon = 5% Chromium Manganese Nickel
Titanium oxide (TiO) is the compound used in the pigment industry.
The compound used in dry cell is manganese oxide (MnO2)
+4 is the highest oxidation state shown by the lanthenoids.
Nickel and Cadmium are the two metals which are used in the large scale battery production.
Copper , Silver and Gold (elements of group 11) are known as the coinage metals as they were used in making coins in the older times.
Titanium tetrachloride TiCl4 is Ziegler-Natta catalyst.
In Wacker’s process PdCl2 is used for oxidation of ethyne to ethanol .
Silver bromide is used in photography. This due to the fact that AgBr readily decomposes to Ag and Br on exposure to light.
Complexes of Nickel are useful in polymerisation of alkynes .
+2 is the lowest common oxidation state of transition metals.
The soft drinks and soda water are packed under high pressure.
The chemical formula for water is H2O
It the ratio of number of moles of a perticular component to the total number of moles of components present in the mixture .
With change in temperature the volume of solvent increases ,due to this the molarity of the solution decreases.
Molarity : It decreases with increase in temperature. Molality : It remains constant . Doesn’t change. In the light of above points it is clear that any change in temperature can bring change in concentration of the solution.
Because the mass do not vary with change in temperature. It remains the same.
Molality remains unaffected with any change in temperature. This is due to the fact that it uses the mass of solvent in Kilograms instead of volume in litres.
Benzene is a non polar solvent and salt is polar in nature . Thus it is not soluble in benzene , whereas in case of water , water and salt both are polar in nature so it is soluble in water.
It is because of the fact that the water and alcohol are polar in nature . Moreover they make Hydrogen bonds, which are a type of weak attraction which facilitates their mixing in all proportions. The following diagram depicts that :-
It can be explained on the basis of simple fact that like dissolves like. Oil is non polar liquid where as water is polar liquid so these do not mix.
No , smoke is not a homogeneous solution . as the particle size of dispersed phase is larger it belongs to the colloidal mixture.