InterviewSolution
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InterviewSolution
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what is chemical propeeties of metal |
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Answer» You can also write that they are electropositive in nature and they are good conductors of heat and electricity. \t1Reaction with OxygenMetal + Oxygen→Metal oxide 4Na(s) + O2(g) →2Na2O(s)\xa0 4Al(s) + 3O2(g) →2Al2O3\xa0 Metals form basic oxides Zn and Al form amphoteric oxides (they show the properties of both acidic and basic oxides) Most of the metal oxides are insoluble in water Some of them dissolve to form Alkali Na2O(s) + H2O(l) →2NaOH(aq)2Reaction with waterMetals react with water to form metal oxides or metal hydroxide and H2 gas is released. 2Na(s) + 2H2O(l) →2NaOH + H2(g) + heat3Reaction with dilute AcidsMetal + Acid →Metal salt + HydrogenHCl\xa0 Mg(s) + 2HCl(aq)→ MgCl2(aq) + H2(g)H2SO4\xa0 2Na(s) + H2SO2→ Na2SO4(aq) +H2(g)\xa0HNO3\xa0 Metal + HNO3→\xa0H2\xa0gas is not displaced.Reason-\xa0HNO3\xa0is strong oxidizing agent.4Reaction with salt solutionsWhen metals react with salt solution, more reactive metal will displace a less reactive metal from its salt solution. CuSO4(aq) + n(s)→\xa0ZnSO4(aq) + Cu(s)5Reaction with ChlorineMetal + Chlorine→ Metal Chloride ionic bond is formed. Therefore Ionic compound is obtained. 2Na+ Cl2\xa0→ 2NaCl6Reaction with HydrogenMetals react with hydrogen to form metal hydride This reaction takes place only for most reactive metals. 2Na(s)+ H2(g) → 2NaH(s)\t |
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