Use of amount of substance in relation to masses of pure substances

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Question 4
Easy

Figure 1 shows the volumes of:

  • potassium iodide solution of concentration 0.20 mol/dm30.20\text{ mol/dm}^30.20 mol/dm3
  • lead(II) nitrate solution of concentration 0.05 mol/dm30.05\text{ mol/dm}^30.05 mol/dm3

which completely react to produce different masses of lead(II) iodide precipitate.

Figure 1: Mass of lead(II) iodide precipitate produced against volume of reactant solution

Determine the simplest whole number ratio of the volumes of:

potassium iodide solution:lead(II) nitrate solution\text{potassium iodide solution} : \text{lead(II) nitrate solution}potassium iodide solution:lead(II) nitrate solution

which completely react with each other. Use Figure 1.

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Use of amount of substance in relation to masses of pure substances Questions

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