Procedure (9)

• Measure 2.0000 – 2.5000g of a known Group 1

  metal carbonate and accurately record the mass of

  the sample. What step is this?

  1st
• Add about 100mL of water and stir to completely

  dissolve the metal carbonate. What step is this?

  2nd
• Allowing for the metal carbonate to be the limiting

  reactant in the experiment, calculate the amount of

  0.1 M CaCl₂ solution that will be added to the

  reaction. What step is this?

  3rd
• Slowly add the calculate volume of 0.1 M CaCl₂ to

  the sample solution and let the precipitate settle (> 5 minutes). What step is this?


  4th
• Filter the solution through a filter paper whose

  constant weight has been initially obtained. What step is this?


  5th
• Take the filter paper out of the funnel and place it in

  the oven. What step is this?

  6th
• Be careful not to tear the paper or lose any part of

  the solid. What step is this?

  7th
• Dry the filter paper at 105°C for 1 hour. What step is this?


  8th
• Obtain the constant weight of the filter paper. What step is this?


  9th