Equilibrium Tes...

The concentration of $$[H^{+}]$$ and concentration of $$[OH^{-}]$$ of a $$0.1\ M$$ aqueous solution of $$2$$M ionised weak acid is: [ionic product of water $$=1\times 10^{-14}]$$.

Buffer solution $$A$$ of a weak monoprotic acid and its sodium salt in the concentration ratio $$x : y$$ has $$pH = (pH)$$,. Buffer solution $$B$$ of the same acid and its sodium salt in the concentration ratio $$y : x$$ has $$pH = (pH)_{2}$$. If $$(pH)_{2} - (pH)_{1} = 1$$ unit and $$(pH)_{1} + (pH)_{2} = 9.5\ units$$, then:

In a vessel containing $$SO_{3}$$, $$SO_{2}$$ and $$O_{2}$$ at equilibrium, some helium gas is introduced so that total pressure increases while temperature and volume remain the same. According to Le Chatelier's principle the dissociation of $$SO_{3}$$ _________.

At a temperature under high pressure $$K_w(H_2O) \, = \, 10^{10}$$, a solution of pH 5.4 is said to be:

To prepare a buffer of pH 8.26 amount of $$({ NH }_{ 4 }{ ) }_{ 2 }{ SO }_{ 4 }$$ to be added to 500 mL of 0.01 M $${ NH }_{ 4 }OH$$ solution is : $$[pK_{ a }({ NH }_{ 4 }^{ + })\ =9.26]$$

Solid ammonium carbamate $$(NH_{2}COONH_{4})$$ dissociates as:

$$NH_{2}COONH_{4}(s)\rightarrow 2NH_3(g) + CO_2(g)$$

In a closed vessel solid ammonium carbamate is in equilibrium with its dissociation products. At equilibrium, ammonia is added such that the partial pressure of $$NH_3$$ at new equilibrium now equals the original total pressure. Calculate the ratio of total pressure at new equilibrium to that of original total pressure.

The equilibrium constant $$K_{P}$$ for the reaction $$H_{2}(g) + CO_{2}(g) \rightleftharpoons H_{2}O(g) + CO(g)$$ is $$4.0$$ at $$1660^{\circ}C$$. Initially $$0.80\ mole\ H_{2}$$ and $$0.80\ mole\ CO_{2}$$ are injected into a $$5.0\ litre$$ flask. What is the equilibrium concentration of $$CO_{2}(g)$$?

A buffer solution made up of $$BOH$$ and $$BCl$$ of total molarity 0.29 M has $$pH = 9.6$$ and $${ K }_{ b }=1.8\ \times \ { 10 }^{ -5 }$$. Concentration of salt and base respectively is:

Which one of the following mixture does not act as a buffer solution?

For preparing a buffer solution of $$pH=7.0$$, which buffer system you will choose: