Chemical Equilibrium Questions and Answers

A buffer solution is one which

0.6 mol of $SO_2$ and 2.0 mol of $O_2$ were mixed and allowed to reach equilibrium, $2SO_2(g) + O_2(g) \rightleftharpoons 2SO_3(g)$. At equilibrium 0.4 mol of $SO_3$ was present. The amounts of $SO_2$ and $O_2$ remaining are

The iodine liberated in an experiment required $15.0\ cm^3$ of $0.03\ mol\,dm^{-3}$ sodium thiosulphate. The number of moles of thiosulphate used is

The solubility of barium hydroxide at 25 °C is $0.24\ g\,dm^{-3}$. Given that $M_r[Ba(OH)_2] = 171$, the molar concentration of the saturated solution, in $mol\,dm^{-3}$, is

A Bronsted-Lowry acid is a species which

A dynamic equilibrium is a state in which

For the equilibrium $N_2(g) + 3H_2(g) \rightleftharpoons 2NH_3(g)$, the expression for $K_p$ is

Nitrogen dioxide decomposes on heating according to the equation: