![]() ![]() What happen if a Cu wire is dipped into a solution of FeSO 4? Why? Give the equation involved for the above chemical change. Due to this chemical change, the blue coloured solution turns colourless. Since, Zn is more reactive than Cu, it displaces Cu from CuSO 4 solution and ZnSO 4 (colourless) is formed. It has been observed that on adding Zn pieces to a solution of CuSO 4, the blue colour disappears. Why are ornaments made of silver and gold?īeing less reactive they are not tarnished by air and moisture. On the other hand, Ag and Hg being less reactive than hydrogen do not liberate H 2 gas from dil. HCl solution and H 2 gas is obtained as Zn is more reactive than hydrogen. Zn would be able to displace hydrogen from dil. Which of the following metals would liberate H 2 gas from a dil. Three metals occurring in free state are gold(Au), silver(Ag) and platinum (Pt). Name three metals which occur in free state. The reactivity series indicates that metals are arranged in decreasing order of their reactivities.Ĭlassify the type of reaction used for determining relative reactivities of metals. What does the reactivity series of metals indicate? Why is the reactivity of different metals different?Īll metals have a different tendency to lose electrons therefore, their reactivity is different. The aim of my experiment is to arrange metals Al, Fe, Cu and Zn in order of their decreasing reactivity. Wash your hands properly after the experiment.Observe the changes carefully as few reactions may occur slowly.If metal C displaces metal B from its salt solution, but metal A displaces metal C from its salt solution it follows that the increasing order of reactivity is: The displacement reactions are based on the reactivity series, where a more reactive metal displaces a less reactive metal from its salt solution.įor three different metals A, B, C, if metal A replaces metal B from its aqueous solution then metal A is more reactive than metal B. In a displacement reaction an ion or an atom in a compound is replaced by an ion or an atom of zinc sulphate element. Test tubes, test tube stand, metals-Zn granules, Fe filings, Cu turnings, Al foil and aqueous solutions of zinc sulphate, ferrous sulphate, copper sulphate and aluminium sulphate. Arrange Zn, Fe, Cu and A1 metals in the decreasing order of reactivity based on the above result.To observe the action of Zn, Fe, Cu and Al metals on the following salt solutions:. ![]() These metals cannot displace hydrogen from acids and water.You can also download NCERT Solutions Class 10 Science to help you to revise complete syllabus and score more marks in your examinations. Metals lying below hydrogen in reactivity series are less reactive than hydrogen.Therefore, these metals can displace hydrogen from its compounds like acids and water. Metals which lie above hydrogen in reactivity series are more reactive than hydrogen.Hydrogen which is a non-metal is also placed in reactivity series. ![]()
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