Monday, 19 September 2011

Chemistry Question of the Day



PbF2(s), which is slightly soluble in water, is dissolved in water to form a saturated solution in equilibrium with solid PbF2. Which of the following will cause additional PbF2(s) to dissolve?


  1. Adding HNO3
  2. Adding Pb(NO3)2
  3. Adding a seed crystal
  4. Adding solid PbF2
  5. Evaporating some of the water to decrease the volume of solution

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