Chemistry Test ...

A solution of complex salt, CrCl₃.6H₂O having co-ordination no. 6 shows an Osmotic pressure 73.89 atm at 300 K, when 1.0 molar solution of complex is used. One litre of this solution on treatment with excess of AgNO₃ solution (α_AgNO3 =1) leads to the formation of AgCl :

A current of 0.1A was passed for 4 hr through a solution of cuprocyanide and 0.3745 g of copper was deposited on the cathode. Calculate the current efficiency for copper deposition. (Atomic weight of Cu = 63.5 g)

Angular part of wave function for an orbital is  sin θ cos θ sin θ where θ = angle from z-axis. Angular node(s) are

Equal masses of O₂ and SO₂ gases were mixed in a vessel of 5 L capacity at 20°C. The total pressure exerted by the mixture was recorded to be 12 atm. The pressure exerted by O₂ in atmosphere is.

Manganese forms non - stoichiometric oxide having the general formula MnO_x. The value of x for a compound that contained 63.7% Mn, is

The difference between the heat change at constant pressure and that at constant volume for the combustion of 46 g of ethanol at 27°C is

Match the columns

The following data were obtained at a certain temperature for the decomposition of NH₃ in contact with catalyst.

The order of reaction is

In van der Waals equation of state for a real gas, the term that accounts for the intermolecular forces is :

In aqueous solution, which of the following orders regarding acid strength is correct?