(d) Zinc and alufninium being more reactive will replace iron from iron sulphate. 3. Answer: (a) Q displaces P Answer: (a) blue (b) brown There is an interactive version to use with the class. The series is based on empirical data on the ability of a metal to displace hydrogen gas from water and acid. Why can we safely preserve iron (II) sulphate in a copper vessel whereas the same can’t be safely preserved in zinc vessel? 13. 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. (a) colourless to blue This series of simple experiments illustrates some of the chemical properties of the halogens following an introduction to the physical properties of the Group 17 elements. Record your observations. Experiment: Metal Reactivity with Acids samabrhms11 2019-06-02T16:23:11+01:00 Specification Point 2.21: Practical: Investigate reactions between Dilute Hydrochloric and Sulfuric Acids and Metals (e.g. (Hint: Look at the dehydration reaction of copper sulphate) Materials Required (d) the colour of the strip changed. The colour of copper sulphate solution is blue. No reaction will take place, as Fe metal is less reactive than Zn. Fe(s) + CuSO4(aq) —> FeSO4(aq) + Cu(s). 4. When you place iron nail in copper sulphate solution, the reddish brown coating formed on the nail is Watch out for the latest updates on NCERT Books, NCERT Solutions, CBSE Sample Papers, RS Aggarwal Solutions and all resources that we share regularly on CBSETuts.com for K12 Students. Question 12: Al2(SO4)3 solution in each test tube. (c) CuSO4 (aq.) Why displacement reaction? Hypothesis. 29. To observe the action of Zn, Fe, Cu and Al metals on the following salt solutions: Arrange Zn, Fe, Cu and A1 metals in the decreasing order of reactivity based on the above result. A piece of granulated zinc was dropped into copper sulphate solution. solution, the time required for the colour of the solution to change from blue to green will be less if: Answer: (ii) Arrange Zn, Fe, Cu and Al metals in the decreasing order of reactivity based on the above result. (d) zinc and aluminium. (b) it is shaken It is useful to place carbon and hydrogen into the reactivity series because these In case of halogens, more reactive non-metal will displace the less reactive one from its place. 22. (c) a colourless gas with a smell of burning sulphur is observed. Four students A, B, C and D noted the initial colour of the solutions in test tubes I. II, III and IV. 10. It is also known as the activity series. (a) green (b) red He added 10 mL of freshly prepared ferrous sulphate solution to each test tube as shown below: Conclusion: Al and Zn metals are more reactive than Fe and Cu. (c) As per reactivity series. Displacement reactions Look at the reaction below: /**/ Here, we witness iron and copper competing to be compounds in solution. (b) add A1 in test tube A and B 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. 2. Therefore, the reactivity of a metal is related to its ability to form positive ions. Physical properties of metals METALS Solid state at room temp Shiny appearance High density Good heat conductors Good conductors of electricity High Melting and Boiling point Ductile and malleable Strong and tough Except Mercury (Liquid) Due to strong forces (metallic) except Mercury and alkali … Metal A is more reactive than B, because metal A displaces metal B from its salt solution. Question 11: Question 1: Iron filings were added to an aqueous solution of copper sulphate. (b) blue to colourless Aluminium sulphate and copper sulphate solutions were taken in two test tubes I and II respectively. 2. Procedure Answer: reactivity series during these experiments. Use very little amount of saturated solution of copper sulphate, aluminium sulphate, iron sulphate and zinc sulphate. 2. Question 4: It is regarded that each molecule of copper sulphate crystals at room temperature contains five water molecules as water of crystallisation. Hence, the reactivity order is Al > Zn. Overview: The students will develop their own activity series of metals based on lab results. (c) II and III (d) III and IV. Cu is unable to displace any metal among Al, Fe and Zn from their salt solutions, therefore Cu is least reactive. 3. Take test tubes A, B, C, and D, clean them. Question 8: Al can displace Zn from its salt solution but no other metal could displace it. (a) I and II (b) I and III Fe readily loses electrons as compared to copper. Theory Note Making Class 11 CBSE Format, Examples, Unseen Passage For Class 11 Literary CBSE With Answers, Unseen Passage for Class 11 Discursive CBSE with Answers, Unseen Passage for Class 11 Factual CBSE With Answers, Rearrange Jumbled Sentences for Class 11 CBSE with Answers, Error Correction Exercises for Class 11 CBSE with Answers, Sentence Transformation Exercises for Class 11 CBSE with Answers, Editing Exercises for Class 11 CBSE with Answers, Active and Passive Voice Exercises for Class 11 with Answers CBSE, Tenses Exercises for Class 11 CBSE With Answers. I will react each metal (Mg, Fe and Cu) with the salt solutions of Mg, Fe and Cu. Chlorine is toxic [1]. 8. Answer: 21. Which one of the two metals is more reactive? After some time, on observation, it was found that the colour of the solution has changed from 22. 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