List of top Chemistry Questions

Which one of the following compounds is not a protonic acid ?
Which of the following substance is an Arrhenius Base but not the Bronsted base ?
Which of the following salt will not undergo hydrolysis in water ?
Which of the following mixtures will act as a buffer solution when dissolved in 50 mL of water ?
Which of the following is not Lewis acid ?
Which of the following is not a Lewis base ?
Which of the following is not a buffer solution ?
Which of the following is an example of homogeneous equilibrium?
Which of the following has maximum pH ?
Which of the following has highest pH ?
1 mole of $N_2$ and 2 moles of $H_2$ are allowed to react in a 1 $dm^3$ vessel. At equilibrium 0.8 mole of $NH_3$ is formed. The concentration of $H_2$ in the vessel is
When $H_2$ and $I_2$ are mixed and equilibrium is attained, then
Formaldehyde polymerizes to form glucose according to the reaction $ 6HCHO\rightleftharpoons {{C}_{6}}{{H}_{12}}{{O}_{6}} $ The theoretically computed equilibrium constant for this reaction is found to be $ 6\times {{10}^{22}} $ If $1\, M$ solution of glucose dissociates according to the above equilibrium, the concentration of formaldehyde in the solution will be
A reversible chemical reaction having two reactants in equilibrium. If the concentrations of the reactants are doubled, then the equilibrium constant will
At 25$^{\circ}$C, the solubility product of Hg$_2Cl_2$ in water is $3.2 \times 1^{-17} mol^3 dm^{-9}$ What is the solubility of Hg$_2Cl_2$ in water at 25$^{\circ}$C?
If acetic acid is mixed with sodium acetate then $H^{+}$ ion concentration will be
A weak acid $HX$ has the dissociation constant $ 1\times 10^{-5}M $ . It forms a salt $NaX$ on reaction with alkali. The degree of hydrolysis of $0.1\, M$ solution of $ NaX $ is
A solution of $MgCl_2$ in water has pH
What is equilibrium expression for the reaction, $ {2NO_{(g)} + Cl_{2(g)} <=> 2NOCl_{(g)} }$ ?
Given that, the solubility product $K_{sp}$ of $AgCl$ is $1.8 \times 10^{-10}$, the concentration of $Cl^-$ ions that must be exceeded before $AgCl$ will precipitate from a solution containing $4 \times 10^{-3}\, M \,Ag^+$ ions is
Degree of dissociation of $0.1 \,N \,CH_{3}COOH$ is $(K_{\text{acid}}=1\times10^{-5})$
0.01 M solution of $H_2A$ has pH equal to 4. If $K_{a1}$ for the acid is $4.45 \times 10^{-7}$, the concentration of $HA^-$ ion in solution would be
Phosphorus pentachloride dissociates as follows in a closed reaction vessel, $PCl_{5\left(g\right)} {\rightleftharpoons} PCl_{3\left(g\right)}+Cl_{2\left(g\right)}$ If total pressure at equilibrium of the reaction mixture is $p$ and degree of dissociation of $PCl_{5}$ is $x$, the partial pressure of $PCl_{3}$ will be
$2NO_{2} {\rightleftharpoons} N_{2}O_{4}+34\, kcal$ ; reaction moves forward at
$4.5 \,moles$ each of hydrogen and iodine were heated in a sealed ten litre vessel. At equilibrium 3 moles of HI were found. The equilibrium constant for $ {H_{2(g)} +I_{2(g)}}$ is