Equilibrium Tes...

The minimum volume of water required to dissolve $$0.1$$g lead(II) chloride to get a saturated solution ($$K_{sp}$$ of $$PbCl_2=3.2\times 10^{-8}$$; atomic mass of Pb$$=207u$$) is:

The gas phase reaction $$2{NO}_{2}(g)\rightarrow {N}_{2}{O}_{4}(g)$$ is an exothermic reaction. The decomposition of $${N}_{2}{O}_{4}$$, in equilibrium mixutre of $${NO}_{2}(g)$$ and $${N}_{2}{O}_{4}(g)$$, can be increased by:

In some solutions, the concentration of $$H_3O^+$$ remains constant even when small amounts of strong acid or strong base are added to them. These solutions are known as:

At $$90^oC$$, pure water $$[H_3O^{\oplus}]$$ as $$10^{-6} mol\, L^{-1}$$ what is the value of $$K_w$$ at $$90^oC$$ ?

An acidic buffer solution can be prepared by mixing the solutions of:

Addition of $${NH}_{4}Cl$$ does not effect the $$pH$$ of solution of $${NH}_{4}OH$$. 

The initial rate of hydrolysis methyl acetate ($$1\ M$$) by a weak acid ($$HA,\ 1M$$) is $$1/100^{th}$$ of that of a strong acid ($$HX,\ 1M$$), at $$25^{o}C$$. The $$K_{a}$$of $$HA$$ is:

For the reversible reaction:

Which one of the following conditions will favour maximum formation of the product in the reaction,
$$A_{2}(g) + B_{2}(g) \rightleftharpoons X_{2}(g),  \ \  \Delta_{r}H = -X\ kJ$$?

Which will make basic buffer?