Complete the following chemical equations:
(i) Ca3P2 + H2O -->
(ii) Cu + H2SO4(conc.)-->
Arrange the following in the order of the property indicated by each set:
(i) HF, HCl, HBr, HI - increasing bond dissociation enthalpy.
(ii) H2O, H2S, H2Se, H2Te- increasing acidic character.
Write the IUPAC name of the complex [Cr(NH3)4Cl2]+. What type of isomerism does it exhibit?
In reference to Freundlich adsorption isotherm, write the expression for adsorption of gases on solids in the form of an equation.
Write an important characteristic of lyophilic sols.
Lyophilic sols are sols that are solvent-attracting. An important characteristic of these sols is that if the dispersion medium is separated from the dispersion phase by any method, the sol can be reconstituted by simply remixing the two again. That is why these sols are also known as reversible sols
Based on the type of particles of dispersed phase, give one example each of associated colloid and multimolecular colloid.
Account for the following:
(i) PCl5 is more covalent than PCl3.
(ii) Iron on reaction with HCl forms FeCl2 and not FeCl3.
The following data were obtained during the first-order thermal decomposition of SO2Cl2 at a constant volume:
SO2Cl2(g)---> SO2(g) + Cl2(g)
Experiment |
Time/s-1 |
Total pressure/atm |
1 |
0 |
0.4 |
Calculate the rate constant. (Given : log 4 = 0.6021, log 2 = 0.3010)