Self-test questions: Chapter 16

Self-test questions: Chapter 16

Quiz Content

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Determine the limiting molar conductivity of an aqueous solution of calcium carbonate CaCO3 (aq).

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The conductivity of an aqueous solution of lithium carbonate, Li2CO3 (aq) is 0.152 S m–1. Calculate the concentration of the solution.

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The conductivity of a solution of carbonic acid, HCOOH, is
3.20 × 10–4 S m–1. Calculate the pH of the solution.

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Use the data for the standard reduction potentials given in Table 17.2 to predict which of the following is the weakest oxidising agent in acidic solution: NO3 (aq), Cr2O7 (aq), O2 (aq) or MnO4 (aq)

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Calculate the standard cell potential for the reaction

2Al(s) + 3Sn2+(aq) → 2Al3+(aq) + 3Sn(s) at a temperature of 298 K.

 

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Determine the standard Gibbs energy change at 298 K for the reaction

2 OH (aq) + Cl2 (g) → Cl (aq) + OCl (aq) + H2O (l) using the data for the standard reduction potentials in Table 17.2.

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Determine the amount of work done by the system in the reaction

Sn (s) + 2H+ (aq) → Sn2+ (aq) + H2 (g) for which

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Determine the standard Gibbs energy change at 298 K for the reaction

2Fe3+ (aq) +  Cu (s) →  2Fe2+ (aq) +  Cu2+ (aq) 

using the data for the standard reduction potentials in Table 17.2.

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The standard Gibbs energy change for the reaction

Fe3+ (aq) + V2+ (aq) → Fe2+ (aq) + V3+ (aq) is –99.4 kJ mol–1 at 298 K. Determine the standard reaction potential for this reaction.

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Using the standard reduction potentials in Table 17.2 to calculate the equilibrium constant for the reaction

2Ag(aq) +  2I (aq) → 2Ag (s) + I2 (s) 

at a temperature of 298 K.

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