Chemistry Test ...

300 mL of PH₃ is subjected to thermal decomposition. What will be the change in the volume of the reaction mixture?

Which of the following reactants are used for the preparation of sodium thiosulphate by spring's reaction?

Which of the following sets represents orthosilicates only?

25 grams of water vaporises at 373 K against a constant external pressure of 1 atm. The molar enthalpy of vaporisation is 9.72 kcal/mol. If steam obeys perfect gas laws, then work done against the atmosphere and change of internal energy in the above process, respectively, are

N₂ is found in 1 L flask under 100 kPa pressure and O₂ is found in another 3 L flask under 320 kPa pressure. If the two flasks are connected, what is the resultant pressure?

If 5.08 g of a cupric salt is dissolved in water and excess of KI is added to the solution, and the liberated I₂ requires 25 ml of M/5 Na₂S₂O₃, where it gets converted into S₄O6^2-, then find the weight percentage of copper in the salt.

How much sodium acetate should be added to a 0.1 M solution of CH3COOH to give a solution of pH = 5.5?

(pK_a of CH₃COOH = 4.5)

Two substances A and B are present such that [A₀] = 4[B₀], and the half-life of A is 5 minutes and that of B is 15 minutes. If they start decaying at the same time following the first order kinetics, after how much time will the concentrations of both of them be the same?

MacArthur process is used for the extraction of

According to CFT, in which of the following complex ions, will the metal ion have t⁶_2g, e⁰_g configuration?