reaction. Calciunm Carbonate an.arbonate is separated fron chloride d hydrochlor
ID: 576192 • Letter: R
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reaction. Calciunm Carbonate an.arbonate is separated fron chloride d hydrochlorie acid IC) react to produce the acid, its mass can be determined by weishici and sand), we can find th thrd component water, carbon dioxide (a gas, and un-reacted solid material. If we separated from the sand by means of a chemical the sand does not dissolve in water or (which is dissolved in the water) will allow us to arrive at an difference. Tracking the uncertainties in each uncertainty of our final results and acuracely weigh (o.0o0 our between 2 5 g and 3.5 g of os 1. Obtain an unknown and accurately lnto altain 1 a a tared beaker 2. Add-25 mL. water to the mixture and stir. After the residue settles, carefully separate the liquid phase from the solids by gravity filtration (see picture beaker into which the liquid phase is collected should bee) The eighed 3. Wash the solid two more times using 25 mL of water picture). These washes should be collected into the same beaker wit liquid from step two (2). 4, Using a hotplate, heat the beaker with the filtrate carefully low heat until all the liquid is removed. It is very important to low heat to ensure that the solid does not splatter. If the does not "appear" dry, keep heating. While you are doin free to move forward with subsequent steps of the experiment below), Just make sure you keep an eye on your heating sample. Allow the beaker to cool, and see weigh the beaker and residue. 5. Heat the beaker again for two - five minutes, let it cool, and reweigh it. If the masses differ by weighing. Remember, the last weighing is the number you will use in your calculations. The next more than 0.0005 g, heat the beaker for another the two minutes followed by cooling, and steps can be worked on while doing the heating and weighing steps above... 6. Slowly and carefully use 25 mL of 1.1 M HCI to transfer all of the solid material from the filter paper from step two (2) into another beaker (this one can be wet or dry, but it should be clean). 7. Wash the filter paper two more times, using 10 mL of 1.1M HCI and transferring the material e same beaker used in step six (6). Finally wash the filter paper with distilled water to rinse the excess HCl out. 8. After the solid residue settles, carefully separate the liquid phase from the solids by gravity filtration. Make sure to use a pre-weighed filter paper. The beaker into which the liquid phase is collected does not need to be pre-weighed. It will contain reacted CaCO, and excess HCl. 9. Wash the solid in the funnel two more times using 25 mL of water each time.Explanation / Answer
Separation techniques
In the separation of NaCl from a mixture of sand and CaCO3. First water is added to the mixture
Gravity filtration is performed to remove NaCl which is not present in the dissolved state in water.
The solid residue to washed three times with water before proceeding for the next step, this is to ensure that no NaCl remains adhered to the residue which would give an error in measurement at later stages.
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