Gandhi heavyweights trial TOP teachers advice about treatments: 1. This experiment requires a substance with a mass equal and have equal volume at all times. To compare the solubility of compounds in water 2. Should write numbers or letters directed to the tube all the tubes to determine whether a substance is an experimental method is the following: 1. containing LiCl Na2CO3 Na2HPO4 KNO3 Na2SO4 0.5 g of each type of medium into test tubes, one tube. Then add water into the tubes were shaken 10 cm3 observers melt. Archiving solution for an experiment to 2. MgCl2 CaCl2 SrCl2 and BaCl2 0.5 g each into test tubes larger than 4 tubes of each tube, then add water to 10 cm3 observers shake to dissolve. Archiving solution for testing next MgCl2 solution from 2. 3. Pour into a small test tube, 5 tubes, then adding a solution of 2 cm3 LiCl Na2CO3 Na2HPO4 KNO3 and Na2SO4 from one species into each tube of 2 cm3, respectively 4th. . The experiment, as well as the third and BaCl2 CaCl2 SrCl2 solution but instead a solution of MgCl2 results TOP 1. LiCl Na2CO3 Na2HPO4 KNO3 Na2SO4 MgCl2 and BaCl2 CaCl2 soluble SrCl2 out two. When the solution is a combination of two types are as follows: LiCl solution Na2CO3 Na2HPO4 KNO3 Na2SO4 MgCl2 CaCl2 SrCl2 BaCl2 discussion after the experiment. TOP results from Summarized as follows: 1. Hydrogen chloride, carbonate, phosphate, nitrate and sulfate of lithium, sodium, potassium dissolves in water well, two. Chlorides and nitrates of IIA element dissolved in water. When a solution of a compound of the element IA mixed with a solution of a compound of the element found some tubes IIA precipitate. Should the grounds of their compounds because of their compounds Group IA IIA among all soluble. The equation for the sedimentation of the element IIA as the reaction between compounds carbonate (CO32-) with element IIA MgCl2 (AQ) + Na2CO3 (AQ) ® MgCO3 (G) + 2NaCl (AQ) Mg2 + (AQ). + CO32- (AQ) ® MgCO3 (G) CaCl2 (AQ) + Na2CO3 (AQ) ® CaCO3 (s) + 2NaCl (AQ) Ca2 + (AQ) + CO32- (AQ) ® CaCO3 (s) SrCl2 (AQ) +. Na2CO3 (AQ) ® SrCO3 (s) + 2NaCl (AQ) sr2 + (AQ) + CO32- (AQ) ® SrCO3 (s) BaCl2 (AQ) + Na2CO3 (AQ) ® BaCO3 (s) + 2NaCl (AQ) Ba2 + (. aq) + CO32- (aq) ® BaCO3 (s) reverse reaction between hydrogen phosphate compound (HPO42-) with IIA element MgCl2 (AQ) + Na2HPO4 (AQ) ® Mg3HPO4 (s) + 2NaCl (AQ) Mg2 +. (AQ) + HPO42- (AQ) ® Mg3HPO4 (s) CaCl2 (AQ) + Na2HPO4 (AQ) ® Ca3HPO4 (s) + 2NaCl (AQ) Ca2 + (AQ) + HPO42- (AQ) ® CaHPO4 (s) SrCl2 (. AQ) + Na2HPO4 (AQ) ® SrHPO4 (s) + 2NaCl (AQ) sr2 + (AQ) + HPO42- (AQ) ® SrCO3 (s) BaCl2 (AQ) + Na2HPO4 (AQ) ® BaHPO4 (s) + 2NaCl (AQ. ) Ba2 + (AQ) + HPO42- (AQ) ® BaHPO4 (s) reverse reaction between compounds of sulfate (SO42-) with IIA element CaCl2 (AQ) + Na2SO4 (AQ) ® CaSO4 (s) + 2NaCl (AQ. ) Ca2 + (AQ) + SO42- (AQ) ® CaSO4 (s) SrCl2 (AQ) + Na2SO4 (AQ) ® SrSO4 (s) + 2NaCl (AQ) sr2 + (AQ) + SO42- (AQ) ® SrSO4 (s). BaCl2 (AQ) + Na2SO43 (AQ) ® BaCO3 (G) + 2NaCl (AQ) Ba2 + (AQ) + SO42- (AQ) ® BaCO3 (G) back three. When mixing two solutions together and sediment occurs. Show that the new compounds are formed ions in solution. Because these compounds soluble recommendations more soluble in water table conditions (Solubility) of the Group IA elements of conclusions about the condition of a water soluble Group IA elements that were tried and tested. Following table shows the condition of a water soluble compounds, some of the elements Group IA elements, the amount of salt dissolved in water (G / 100 G) CO32- Cl- NO3- SO42- HPO42- Li 86.2 (1) 34.8 1:54 (3. ) 34.9 (1) - Na 35.7 fifty-two past nine p.m. (10) 92.1 11.0 (10) 4.15 (12) K 23.8 112.0 13.3 12.0 167.0 Rb 77.0 450.0 44.3 42.4 - Cs 162.2 260.5 9.2 167.0 - Conclusion Compared to dissolve in water. Group IA and IIA their compounds among the compounds of elements soluble compounds of the Group IA IIA element that is water soluble compounds. Compounds, nitrates and chlorides. The carbonate compound Hydrogen sulfate, phosphate and insoluble except magnesium sulfate.
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