Equilibrium practice · Medium

Which among the following is an electron deficient compound?

A solution of sodium borate has a $\mathrm{pH}$ of approximately:

One litre of water contains ${10^{ - 7}}\;\mathrm{mole}\;{\mathrm{H}^ + }$ ions. Degree of ionisation of water is:

If the pressure of ${\mathrm{N}_2}/{\mathrm{H}_2}$ mixture in a closed apparatus is 100 atm and $20\%$ of the mixture then reacts, the pressure at the same temperature would be :

In the reaction, $3A + 2B \to 2C$, the equilibrium constant ${K_c}$ is given by

The concept that an acid is a proton donor and a base is a proton acceptor was introduced by:

The equilibrium,

${\mathrm{P}_4}\left( s \right) + 6\mathrm{C}{\mathrm{l}_2}\left( \mathrm{g} \right)\;\leftrightharpoons\;4\mathrm{PC}{\mathrm{l}_3}\left( \mathrm{g} \right)$ attained by mixing equal moles of ${\mathrm{P}_4}$ and $\mathrm{C}{\mathrm{l}_2}$ in a evacuated vessel. Then, at equilibrium,

An aqueous solution of $\mathrm{1M }\;\mathrm{NaCl}\;\mathrm{ and}\;1\;\mathrm{M}\;\mathrm{ HCl }\;\mathrm{is}$

The $\mathrm{pH}$ of ${10^{ - 8}}\mathrm{M\; HCl}$ solution is

Arrange the following in increasing order of solubility product:

$\mathrm{Ca}(\mathrm{OH})_2, \mathrm{AgBr}, \mathrm{PbS}, \mathrm{HgS}$

When pressure is applied to the equilibrium system ice r water. Which of the following phenomenon will happen?

Which one of the following salts on being dissolved in water gives $\mathrm{pH}\; > \;7\;\mathrm{at}\;25^\circ C$

$\mathrm{va}{\mathrm{n}^\mathrm{'}}\mathrm{t }\;\mathrm{Hoff's}$ equation giving the effect of temperature on chemical equilibrium is represented as:

Final pressure is higher than initial pressure of a container filled with an ideal gas at constant temperature. What will be the value of equilibrium constant?

The pH of pure water at ${50^0}C$ is

A solution that has reserve acidity (or) alkalinity is called

In a vessel containing $\mathrm{S}{\mathrm{O}_3},\,\mathrm{S}{\mathrm{O}_2},$ and ${\mathrm{O}_2}$ at equilibrium, some helium gas in introduced so that, the total pressure increase, while temperature and volume remain constant. According to Le-Chatelier’s principle the dissociation of $\mathrm{S}{\mathrm{O}_3}:$

Which of the following is correct for the reaction?
${\mathrm{N}_2}\left( \mathrm{g} \right) + 3{\mathrm{H}_2}\left( \mathrm{g} \right)\leftrightharpoons2\mathrm{N}{\mathrm{H}_3}\left( \mathrm{g} \right)$

5 moles of $\mathrm{S}{\mathrm{O}_2}\;$ and 5 moles of ${\mathrm{O}_2}\;$ are allowed to react to forms $\mathrm{S}{\mathrm{O}_3}$ in a closed vessel. At the equilibrium stage 60% of $\mathrm{S}{\mathrm{O}_2}\;$ is used up. The total number of moles of $\;\mathrm{S}{\mathrm{O}_2}\;,{\mathrm{O}_2}\;and\;\mathrm{S}{\mathrm{O}_3}$ in the vessel now is

In the hydrolysis of a salt of weak acid and weak base, the hydrolysis constant ${K_h}$ is equal to

Partial pressure of $A,B,C$ and $D$ on the basis of gaseous system, $A + 2B\;\leftrightharpoons\;C + 3D,$ are $A = 0.20,\;B = 0.10,\;C = 0.30$ and $D = 0.50\;\mathrm{atm}$. The numerical value of equilibrium constant is

For the reaction, ${\mathrm{H}_2}\left( \mathrm{g} \right) + {\mathrm{I}_2}\left( \mathrm{g} \right) \to 2\mathrm{HI}\left( \mathrm{g} \right)$, the equilibrium constant ${K_p}$ changes with

The $pH$ of tears coming out of a person’s eye is:

For the reaction equilibrium,

$2\mathrm{NOBr}\left( \mathrm{g} \right)\;\leftrightharpoons\;2\mathrm{NO}\left( \mathrm{g} \right) + \mathrm{B}{\mathrm{r}_2}\left( \mathrm{g} \right),$ if ${P_{\mathrm{B}{\mathrm{r}_2}}} = \frac{P}{9}$ at equilibrium and $P$ is total pressure. The ratio ${K_p}/P$ is equal to:

Which of the following salts is the most basic in aqueous solution?

Statement I :$\mathrm{SO}_{2(g)}+\frac{1}{2} \mathrm{O}_{2(g)} \rightleftharpoons S \mathrm{O}_{2(g)}$+heat. Forward rection is favoured at high temperature and low pressure.

Statement II : Reaction is endothermic.

A solution of $\mathrm{FeC}{\mathrm{l}_3}$ in water acts as acidic due to:

The first and second dissociation constants of an acid
${\mathrm{H}_2}A\,\mathrm{are}\,\,1.0 \times {10^{ - 5}}\,\mathrm{and}\,\,5.0 \times {10^{ - 10}}$ respectively. The overall dissociation constant of the acid will be

If $K_c$ is in the range of _____ appreciable concentrations of both reactants and products are present.

Which of the following will have maximum pH?