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Testing of Sulfate ion and calcium chloride. Calcium sulfate is soluble to some extent in water. If Ca 2+ and SO 42- ions concentration in the water are high, a white precipitate ( CaSO 4 ) forms. When adding water, precipitate dissolves to give a colourless solution again.
Experimentally, it is found that zinc reacts with both copper salts and silver salts, producing \(\ce{Zn2+}\). Zinc therefore has a greater tendency to be oxidized than does iron, copper, or silver. Although zinc will not react with magnesium salts to give magnesium metal, magnesium metal will react with zinc salts to give zinc metal:
12 Αυγ 2024 · Edexcel. Did this video help you? Metal displacement reactions. The reactivity of metals decreases going down the reactivity series. This means that a more reactive metal will displace a less reactive metal from its compounds. Two examples are: Reacting a metal with a metal oxide (by heating)
29 Αυγ 2023 · Sulfate ion is a very weak base, while HSO−4 HSO 4 − is a fairly strong acid, with Ka = 0.01 K a = 0.01. On the other hand, H2SO4 H 2 SO 4 is a very strong acid. Because it is such a weak base, sulfate ion undergoes negligible hydrolysis in aqueous solution.
1 Μαρ 2022 · This work can provide a novel insight for understanding the selectivity of water and SO 4 2− species oxidation on metal oxides, and open a new way for both on-site H 2 O 2 production and advanced oxidation processes application.
Which solution could be used to precipitate the barium ion, Ba 2+, in a water sample: sodium chloride, sodium hydroxide, or sodium sulfate? What is the formula for the expected precipitate? Answer. sodium sulfate, BaSO 4
1. Occurrence. Sulfate (SO 42−) is widely distributed in nature and may be present in natural waters in concentrations ranging from a few to several thousand milligrams per liter. Mine drainage wastes may contribute large amounts of SO 42− through pyrite oxidation. Sodium and magnesium sulfate exert a cathartic action.
