Equilibrium Tes...

Consider the following equilibrium: $$2NO_2\rightleftharpoons 2NO_3; \Delta H=-ve$$ If $$O_2$$ is added and volume of there action vessel is reduced, the equilibrium

If the equilibrium constant of $$BOH \rightleftharpoons B^{\oplus}+\overset{\circleddash}{O}H$$ at $$25^oC$$ is $$2.5\times 10^{-6}$$, then equilibrium constant for $$BOH + H^{\oplus} \rightleftharpoons  B^{\oplus}+H_2O$$ at the same temperature is

$$16.6  mg$$ of solid silver chromate (molar mass = $$332$$) when put into $$500  mL$$ water, silver ion and chromate ion are obtained. On adding more solid, the concentration of ions does not increase. If $$100 mg$$ of solid is put into 2 litres of water, then the amount of solid remained undissociated would be :

Which statement/relationship is correct?

Which of the following factor shifted the reaction, $$PCl_3 + Cl_2\rightleftharpoons PCl_5$$ at left side?

If $$0.00050$$ mol $$NaH{CO}_{3}$$ is added to $$1$$ litre of a buffered solution of $$pH\ 8$$, then how much material will exist in each of the three forms $${H}_{2}{CO}_{3},H{CO}_{3}^{-}$$ and $${CO}_{3}^{2-}$$? 

The equilibrium, $$SO_2Cl_2 \:(g)\rightleftharpoons SO_2 \:(g) + Cl_2 \:(g)$$ is attained at $$25 ^{\circ}\! C$$ in a closed container and an inert gas, helium, is introduced. Which of the following statements is correct?

Calculate the $${OH}^{-}$$ concentration and the $${H}_{3}{PO}_{4}$$ concentration of a solution prepared by dissolving $$0.1$$ mol of $${Na}_{3}{PO}_{4}$$ in sufficient water to make $$1L$$ of solution.

$$EDTA,$$ often abbreviated as $${H}_{4}Y$$, forms very stable complexes with almost all metal ions. Calculate the fraction of EDTA in the fully protonated form, $${H}_{4}Y$$ in a solution obtained by dissolving $$0.1$$ mol $${Na}_{4}Y$$ in $$1$$ litre.