(a) colourless to blue What will happen if Fe metal is added to ZnSO4 solution? (b) Zinc is most active metal followed by copper and then iron. Therefore, the reactivity of a metal is related to its ability to form positive ions. The colour of copper sulphate solution is blue. You are given two test tubes A and B, with solutions ZnS04 and A12(S04)3, both are colourless. (d) reddish-brown to light green. The reactivity series In a reactivity series, the most reactive element is placed at the top and the least reactive element at the bottom. > Reaction with Al2(SO4)3 solution: Which group of students recorded the observations correctly? (c) a colourless gas with a smell of burning sulphur is observed. Practical work: establish the reactivity order for lithium, magnesium and calcium by reacting similar size pieces with cold water. (d) All tests will help in identifying the solutions. The reactivity series is also known as the activity series of metals. (c) solution of ZnSO4 and Al2(SO4)3 only changed. Some: Sodium: Na: Light: Lithium: Li: Color Question 4: (c) I and II (d) III and IV. Answer: 5. Dip small, clean pieces of Al, Zn, Fe and Cu metal in test tube A, B, C and D respectively. 14. 31. Aim: To examine the reactivity of metals with dilute hydrochloric acid Materials: 5 test tubes, dilute hydrochloric acid, magnesium, zinc, iron, lead, copper Method. When an aluminium strip is kept immersed in freshly prepared ferrous sulphate solution taken in a test tube, the change observed is Name one metal which when added to blue CuSO4 solution changes it to green colour. Answer: Note: When metals react with nitric acid they do not release hydrogen gas (except magnesium and manganese) because nitric acid acts as a strong oxidizing agent. Chemicals required: Aluminium sulphate solution, copper sulphate solution, zinc sulphate solution, iron sulphate solution, metal strips of iron, zinc; copper and aluminium. What happens when Fe (Iron) metal is added to blue colour copper sulphate solution? (c) Cu + ZnSO4 (a) copper and zinc Conclusion: Al metal is not displaced by any of the given metals i.e. 19. 26. (a) blue to pale green (b) blue to dark green (c) blue to colourless (d) blue to reddish-brown. Al is not displaced by any of the four metals from its salt solution, hence, Al is at the top of the reactivity series. 16. A more reactive metal can displace a less reactive metal from its salt solution or compounds. In one molecule of copper sulphate, five water molecules are present to form crystal. Green iron II sulphate is formed. 9. Arrange the given metals in the reactivity series: What happens when A1 metal is added to copper sulphate solution? It is because Fe does not react with FeSO4 solution. Answer: A metal’s reactivity can be worked out by studying its reactions in both the reactions to competition and displacement. After a few minutes, it would be observed that the colour of 10 mL of freshly prepared iron sulphate was taken in You would observe the deposition of metal on zinc in test tubes (a) yellow and green > Reaction of Metals with Salt Solution (c) heat zinc and copper strips. Hence, it is more reactive than copper metal. Take four clean test tubes. It is used to summarize information about the reactions of metals with acids and water, single displacement reactions and the extraction of metals from their ores 21. A student took four test tubes containing solutions of different colours marked I, II, III, and IV as shown below. I. CuSO4 solution in each test tube. Materials Required 18. (ii) Arrange Zn, Fe, Cu and Al metals in the decreasing order of reactivity based on the above result. (b) it is shaken The correct set of observations have been recorded by student (d) heat iron and add in copper sulphate. Answer: The colour of the solution changed from: Reactivity: Put: Potassium: K: As you can see these metals (excluding carbon, as carbon is used for the reduction of metal from metal oxide ore, all metals below carbon are reduced by it) are above hydrogen in the reactivity series so they react with acids and displace hydrogen gas. A more reactive metal will displace a less reactive metal from solution. Four clean test tubes, marker, a piece of sand paper and test tube stand. Al > Zn > Fe > Cu. Fe readily loses electrons as compared to copper. Chlorine is toxic [1]. Why does the following reaction takes place? > A more reactive metal will displace (take the place of) a less reactive metal in a metal salt solution. (d) Iron spoon will not show any change. 27. This is because its protective aluminium oxide layer makes it appear to be less reactive than it really is. When you keep aluminium strip in FeSO4 solution, what change is seen? > The arrangement of metals in decreasing order of their reactivity is called reactivity series or activity series of metals. Reactivity Series, Redox Reactions and Extraction of Metals. 6. (d) colourless. CBSE Class 10 Science Practical Skills – Reactivity Series. Reactivity of elements (Hint: Look at the dehydration reaction of copper sulphate) 3. (c) light green to colourless (a) Zinc is most active metal followed by iron and copper. 4. 17. Specified practical – metal displacement reactions Displacement in solutions There are a number of ways that you could investigate a displacement rractivity. 1. If the atom readily loses electron at room temperature it is said to be reactive metal than the metal whose atom does not readily lose electron at the room temperature. Mar 26, 2020 - Explore Arif's board "reactivity series" on Pinterest. (d) Ferrous salts are green. Conclusion: Al, Zn and Fe metals are more reactive than Cu. Displacement reactions Look at the reaction below: /**/ Here, we witness iron and copper competing to be compounds in solution. 4. (d) zinc and aluminium. 10. 2. (a) In first two test tubes, the metal will not react but in other two it will react. Due to the displacement reaction the blue colour of copper sulphate changes to green colour of iron sulphate. From CBSE Science practical to Lab manual, project work, important questions and CBSE lab kit manual, all the information is given in the elaborated form further in this page for Chapter 4 Reactivity Series students. Students add each metal to acid and record observations as to whether they react. (a) Fe displaces copper ions. (c) the copper strip became thicker Question 2: The water loses oxygen (is reduced). > A more reactive metal will always displace a less reactive metal. (b) blue to colourless What is the colour of copper sulphate solution? (b) green Metals lying below hydrogen in reactivity series are less reactive than hydrogen. Log in. Answer: Precautions Therefore, these metals can displace hydrogen from its compounds like acids and water. The colour of the coating obtained on a zinc rod on dipping in aqueous copper sulphate solution will be > Reaction with CuSO4 solution: 4. After inserting The colour of zinc sulphate solution is (d) light green solution changes to blue. To show that zinc is more reactive than copper, the correct procedure is to Copper metal is less reactive than iron metal, so no displacement reaction will occur between FeSO, Aluminium metal is more reactive than iron metal, so displacement reaction will occur between FeSO. (d) all the above are correct. How can you test that a given sample contains water or not? Displacement Reactions - The Reactivity Series This activity investigates the reactions between powdered metals (magnesium, copper, iron, zinc) and the solutions (magnesium sulphate, copper sulphate, iron sulphate, zinc sulphate). He added 10 mL of freshly prepared ferrous sulphate solution to each test tube as shown below: (b) solution of ZnSO4, CuSO4 and Al2(SO4)3 changed and that of FeSO4 did not change. 1. Al is able to displace Fe, Cu and Zn from their salt solutions, therefore Al is most reactive. (c) Test tube with ZnSO4 solution The reactivity series helps us to predict the capability of a metal to displace another metal during a displacement reaction. 8. 3. 2. Students work in Take four test tubes and label them as ZnSO. Practical applications of the series are prediction of double displacement reactions involving two metals and the extraction of metals from their ores. Tie-ins include single-replacement reactions (SRR), oxidation-reduction, practical applications such as galvanization, and predicting reactions. 17. 11. (a) I and II (b) I and III Which of the following reaction will take place? (d) green and reddish-brown. Two metals which can displace iron from its solution are: Clean the metals by rubbing them with a piece of sand paper before dipping them in the salt solutions. In chemistry, a reactivity series (or activity series) is an empirical, calculated, and structurally analytical progression of a series of metals, arranged by their "reactivity" from highest to lowest. Copper is less reactive than iron and cannot react with iron sulphate. Metal Displacement Reactions 1. Why did the colour of copper (II) sulphate solution, change, when zinc metal was dipped in it? 2Na (s) + 2H 2 O (l) ==> 2NaOH (aq) + H2 (g) You can write similar equation for lithium and potassium (Li/K instead of Na) and. 3. (a) white (a) The solution is blue in the beginning. Give reason. 2. Dip a small, clean piece of aluminium, zinc, iron and copper metals in test tubes A, B, C and D respectively. Principle: The most reactive metal will displace the less reactive metal. (a) Al + ZnSO4 Question 6: 3. (b) Zn + ZnSO4 To determine the position of Element X in the reactivity series. Wash the test tubes after every set of observations of interaction of a particular metal with the four salt solution. Four students were assigned separately the experiment of interaction of an iron nail with a solution of copper sulphate. The most reactive element is placed at the top and the least reactive at the bottom. (b) add more copper sulphate solution (a) the green solution slowly turns blue. 7. 11. Activity series of some of the more common metals, listed in descending order of reactivity. Al > Zn > Fe > Cu. Aluminium powder was added to a solution of copper sulphate. Question 4: 15. (d) it is heated. Which one is not observed when aluminium is added to a solution of copper sulphate? (a) Test tube with CuSO4 solution The reactivity series is the arrangement of elements according to their reactivity. (b) R is displaced by P What metal is the least reactive? Question 10: The arrangement of metals in a vertical column in order of their decreasing reactivity downwards is called the reactivity series of metals. Take test tubes A, B, C, and D, clean them. (b) The final solution becomes colourless. (c) white (d) green. solution, the time required for the colour of the solution to change from blue to green will be less if: Question 1: What is the basic principle involved in this Experiment? Use very little amount of saturated solution of copper sulphate, aluminium sulphate, iron sulphate and zinc sulphate. Answer: These metals cannot displace hydrogen from acids and water.You can also download. Question 5: ACTIVITY SERIES LAB (MICROSCALE) Purpose: to study the chemical activity of ... the six reagents you will be using in this part of the experiment: KNO 3, Mg(NO 3) 2, Zn(NO 3) 2, CuSO 4, AgNO 3, and distilled water. (b) FeSO4(aq.) (a) A (b) B (c) C (d) D. 1. (b) Zinc salt solutions are not coloured. 23. What is displacement reaction? (a) This will show displacement reaction. Hence, displacement reaction will occur. Chlorine is more reactive than iodine and hence it displaces iodide ion. Non-Metal Displacement Reactions > Metal salts are coloured 5. The colour of iron sulphate solution is green. Copper turnings were added to colourless salt solution. Fe(s) + CuSO4(aq) —> FeSO4(aq) + Cu(s). Whereas zinc is more reactive than iron and hence it can react with iron sulphate. In this article, we have discussed a step-by-step procedure to perform CBSE Class 10 Science Practicals experiment Reactivity Series. A student performed the following four experiments: Conclusion: Al metal is more reactive than Zn metal. It is used to determine the products of single displacement reactions, whereby metal A will replace another metal B in a solution if A is higher in the series. Answer: Question 7: (d) rough and granular. 5. Question 1: (a) I and III (b) II and IV The test tubes containing copper sulphate solution and ferrous sulphate solution could be the tubes: 31. Magnesium, Zinc and Iron) > Metals: The atoms of metal will always lose electrons to form positive ions called cations. (a) add more iron strips 4. (c) silver and aluminium (d) blue to yellow. (c) iron and aluminium (i) To observe the action of Zn, Fe, Cu and Al metals on the following salt solutions: The water is therefore the oxidising agent. zinc rod in each solution and leaving it undisturbed for two hours, they noted the colour of each solution again. Pour equal amount of their aqueous solutions into the respective test tubes. 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