→ Complete the Table 3.4 by writing anode and cathode in each. How many cells can be produced using these? → You have used three metals Zn, Cu and Ag. → write the reactions taking place at cathode and anode. Mark the direction of electron how in the cell illustrated. → Direction of flow of electrons From Cu to Ag → Note down the reaction of the Galvanic cell. → Write the chemical equation for the reaction taking place at the Cu electrode. → What is the reaction taking place here? → Identify the chemical reaction that takes place at the Zn electrode. → Which electrode has the ability to donate electrons in a cell constructed using these metals? → Write equations showing oxidation and reduction. → Which metal was oxidised in this case? Which metal was reduced? ![]() The gaining of electrons is called reduction.Ĭomplete this chemical equation by assigning oxidation numbers.Ģ Ag +1 NO 3 1–+ Cu°→ Cu 2+ (NO 3) –1 2 + 2Ag 0 → What is the name of this reaction? Why? Because the losing of electrons is called oxidation. → Is this reaction oxidation or reduction? Why? → Isn’t it due to the higher reactivity of zinc (Zn) when compared to copper (Cu)? Zn is placed above Cu in the reactivity series because Zn has a higher reactivity than Cu. → On the basis of the position of Zn and Cu in the reactivity series, can you explain why Cu had been displaced? → Which is the metal that gets displaced here? The change in intensity of the colour of CuSO 4 solution because when the Zn rod is dipped in CuSO 4 solution, the Cu 2+ ions in the solution get, deposited at the Zn rod as Cu atoms. The blue colour of CuSO 4 solution is due to the presence of Cu 2+ ions. ![]() → What is the reason for the change in intensity of the colour of CuSO 4 solution? When the Zn rod is dipped in CuSO 4 solution, the Cu 2+ ions in the solution get deposited at the Zn rod as Cu atoms. After the experiment Zn rod became blue due to the deposition of copper. Sodium > Magnesium > Aluminium > Copper > Gold.īefore the experiment the Zn rod was colourless. → List the above metals in the decreasing order of their reactivity with air and thereby losing lustre → Which metal among magnesium, copper, gold, sodium and aluminium, loses its lustre at a faster rate? → Based on your observation, arrange these metals in the decreasing order of their reactivity. → Which gas is formed as a result of this reaction? Kerala State Syllabus 10th Standard Chemistry Solution Chapter 3 Reactivity Series and Electrochemistry Reactivity Series and Electrochemistry Text Book Questions and Answers You can Download Reactivity Series and Electrochemistry Questions and Answers, Summary, Activity, Notes, Kerala Syllabus 10th Standard Chemsitry Solutions Chapter 3 help you to revise complete Syllabus and score more marks in your examinations.
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