A quantity of PCl_5(g) was heated in a 10 litre vessel at 250⁰C PCl_5(g) ⇔PCl_3(g)+Cl_2(g) At equilibrium the vessel contains 0.1 mole of PCl₅ 0.2 mole of PCl₃ and 0.2 mole of Cl₂ .The equilibrium constant is

H₃O⁺+OH^-→2H₂O

Three faradays of electricity are passed through molten Al₂O₃,aqueous solution of CuSO₄ and molten NaCl taken in three different electrolytic cells.The amount of Al,Cu and Na deposited at cathodes will be in the ratio

Number of coulombs of current required to convert completely 1 mole of MnO₄^-ions in acid medium to one mole of Mn²⁺ions electrolytically is

In a 500ml flask,the degree of dissociation of PCl₅ at equilibrium is 40% and the initial amount in 5 moles.The value of equilibrium constant in mol lit^-1 for the decomposition of PCl₅ is

The olefin which on ozonolysis gives CH₃CH₂CHO and CH₃CHO is

Which of the following contains a coordinate covalent bond ?

5 moles of acid is required to change the pH of 1 litre of buffer by 2units.Find buffer capacity.

One Faraday of current was passed through the electric cells placed in series containing fused electrolytes with Ag⁺²,Ni²⁺,Cr³⁺ ions. The amount of Ag(at.wt=108), Ni(at.wt=59) and Cr(at.wt=52) deposited will be

The amount of electricity that can deposit 108gm of silver from AgNO₃ solution is