DP Chemistry Questionbank

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• 18M.2.hl.TZ2.6c.ii: A two-step mechanism is proposed for the formation of NO2(g) from NO(g) that involves an...
• 18M.2.hl.TZ1.1d.iii: Determine an approximate order of magnitude for Kc, using sections 1 and 2 of the data booklet....
• 18M.1.hl.TZ1.23: 1.0 mol of N2(g), 1.0 mol of H2(g) and 1.0 mol of NH3(g) are placed in a 1.0 dm3 sealed flask and...
• 17N.2.hl.TZ0.6a.iii: Determine the value of ΔGθ, in kJ, for the above reaction at 761 K using section 1 of the data...
• 17N.2.hl.TZ0.6a.ii: The following equilibrium concentrations in mol dm–3 were obtained at 761 K. Calculate the...
• 17N.1.hl.TZ0.23: At 700 ºC, the equilibrium constant, Kc, for the reaction is 1.075 × 108. 2H2 (g) + S2 (g)...
• 17M.2.hl.TZ2.4d.ii: Comment on the value of ΔG when the reaction quotient equals the equilibrium constant, Q = K.
• 17M.2.hl.TZ2.4d.i: At a given time, the concentration of NO2(g) and N2O4(g) were 0.52...
• 17M.1.hl.TZ2.23: Components X and Y are mixed together and allowed to reach equilibrium. The concentrations of X,...
• 17M.1.hl.TZ1.23: The graph shows values of ΔG for a reaction at different temperatures. Which statement is...
• 16N.1.hl.TZ0.25: A mixture of 0.40 mol of CO (g) and 0.40 mol of H2 (g) was placed in a 1.00 dm3 vessel. The...
• 16M.2.hl.TZ0.2a: (i) Deduce the equilibrium constant expression, Kc, for this reaction. (ii) At exactly 600°C the...
• 16M.1.hl.TZ0.25: Which is correct for an isolated system in...
• 15M.1.hl.TZ2.23: The equation for the reaction between two gases, A and B,...
• 15M.2.hl.TZ1.3c.ii: The Contact process involves this homogeneous...
• 15M.2.hl.TZ2.7d.ii: When 1.00 mol of nitrogen and 3.00 mol of hydrogen were allowed to reach equilibrium in a...
• 14M.2.hl.TZ2.1c.v: The other concentrations in the equilibrium mixture were calculated as follows: Use these...
• 14M.2.hl.TZ1.7a: (i)     Deduce the equilibrium constant expression for this reaction.     (ii)     Explain the...
• 14N.1.hl.TZ0.23: A mixture of 2.0 mol of \({{\text{H}}_{\text{2}}}\) and 2.0 mol of \({{\text{I}}_{\text{2}}}\) is...
• 13N.1.hl.TZ0.27: What is the relationship between \({\text{p}}{K_{\text{a}}}\), \({\text{p}}{K_{\text{b}}}\) and...
• 13M.1.hl.TZ1.23: When gaseous nitrosyl chloride, NOCl (g), decomposes, the following equilibrium is...
• 13M.2.hl.TZ1.8c.iii: 1.00 mol of \({\text{C}}{{\text{H}}_{\text{3}}}{\text{OH}}\) is placed in a closed container of...
• 10N.2.hl.TZ0.6a: (i)     Use the graph to deduce whether the forward reaction is exothermic or endothermic and...
• 09N.2.hl.TZ0.6e.ii: Determine the value of the equilibrium constant, \({K_{\text{c}}}\).
• 09M.1.hl.TZ2.28: The indicator, HIn is used in a titration between an acid and base. Which statement about the...
• 09M.2.hl.TZ2.6b: When a mixture of 0.100 mol NO, 0.051 mol \({{\text{H}}_{\text{2}}}\) and 0.100 mol...
• 11M.2.hl.TZ1.7c.i: Calculate the concentrations of the other three species present at equilibrium.
• 11M.2.hl.TZ1.7c.ii: State the equilibrium constant expression, \({K_{\text{c}}}\), and calculate the equilibrium...
• 11M.2.hl.TZ2.6a.v: At a temperature just above 700 K it is found that when 1.60 mol of hydrogen and 1.00 mol of...