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Junior chemistry points 2 Mg O2 is ignited or Δ2magnesium is burned violently.Bright white light.White solid is generated.Heat release.S O2 ignited a light blue flame in the air, such as severe combustion, heat release, stimulating flavor gas.The formation of a white precipitate of CaCO 3 H 2 O 2 = Ca (H 3) 2 gradually dissolved the cave,Ca (HCO3) 2 △ O 3 O 2 O 2 O 2 O 2 C, white precipitation, the gas that causes the clarification of lime water to become turbid, and the scale is formed.The Black of CuO CO Δcu CO2 gradually turns red,HCl AgNO 3 = AgCl ↓ HNO 3 generates white precipitation and does not dissolve in dilute nitric acid to test Cl-Ba (OH) 2 sulfuric acid = baso2o2h2o generates white precipitation and is not dissolved in dilute nitric acid for the test of so-2-BaCl2 sulfuric acid = baso4↓ 2HCl generates white precipitation and is not dissolved in dilute nitric acid for the test of
Why is groundwater red after storage? 10 Such well water can not be drunk!!!Moreover, iron and manganese are seriously exceeding the standard.Our well water is the same as your well water,We went to Sina blog Lida to clean water,Helped us with water treatment,Now that we have reached the national drinking water standard,And the cost is only once for life.Can not drink,And the exceeding standard is more serious,I will know the inspection.Iron is generally difficult to measure,Because the oxidation is faster,Wait a few days for inspection,It may not be possible to test the iron,But Iron must exceed the standard.Manganese can be tested for inspection,Because manganese is difficult to be naturally oxidized.However, Meng and iron in well water usually exceed the standard at the same time.I do,Lida well water filter,Of,The iron and manganese filter of 2 tons/hour is 3180 yuan,There are many models available,You need to know about the filter on Sina search Lida well water.Your well water is above the standard of iro
