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The direction of deflection shows that e -1 s flow from mg electrode to hydrogen electrode, i. Hence, the cell may be represented as follows :.

Can you store copper sulphate solutions in Ncert Solutions Of Class 10th Geography Chapter 3 Swift a clas pot? Calculate the potential of hydrogen electrode in contact with a solution whose pH is Calculate the standard Gibbs energy and the equilibrium constant of the cell reaction.

Why soluyions the conductivity of a solution decrease with dilution? Ans: The conductivity of a solution is linked ncert solutions class 10th chemistry chapter 3 swift the number of ions present per unit volume.

With dilution, these decrease and the corresponding conductivity or specific conductance of the solution decreases. Suggest a way to determine the value of water. The molar conductivity of 0. If a current of 0. Suggest a list of metals which can be extracted electrolytically.

The process ncert solutions class 10th chemistry chapter 3 swift known as electrolytic reduction. For details, consult Unit For example, sodium, potassium, calcium, magnesium.

Write the chemistry of recharging the lead storage battery, highlighting all the materials that are involved during recharging. When the battery is in use, the reaction taking place are: On charging the battery, the reverse reaction takes place, i.

Suggest two materials other than hydrogen that can be used as fuels 01th the fuel cells. Explain how rusting of iron is envisaged as setting up of an electrochemical cell.

Ferrous ions are further oxidised by atmospheric oxygen to ferric ions which combine with water to form hydrated ferric oxide, Fe 2 O 3. Arrange the following metals in the order in which they displace each other from their salts. Arrange these metals in their increasing order of 10ht power. Sol: Higher the oxidation potential more easily it is oxidized and hence greater is the reducing power. Further show: i Which of the electrode is negatively charged?

The set-up will be similar to as shown below, i Anode, i. Calculate the standard cell potentials of the galvanic cells in which the following reactions take place. Outside Delhi Sol:. Write the Nernst equation and emf of the following cells at K:. In the button vlass widely used in watches and other devices the following reaction takes place: Sol:.

Define conductivity and molar conductivity for the solution of an electrolyte. Discuss their variation with concentration. Sol: The reciprocal of resistivity is known as specific conductance or simply conductivity. It is denoted by K kappa. Hence, conductivity of a solution is defined as the conductance of a solution of chaptrr cm length and having 1 sq.

Alternatively, it may be defined as conductance of solutlons centimetre cube of the solution of the electrolyte. Molar conductivity of a solution at a dilution V is the conductance of all the ions produced from 1 mole of the electrolyte dissolved in V cm 3 of the solution when the electrodes are one cm apart and the area of the electrodes is so large that the solutikns of the solution is contained between.

Variation of conductivity and molar conductivity with concentration: Chmistry always decreases with decrease in concentration, for both weak and strong electrolytes.

This is because the number of ions per unit volume that carry the current in a solution decreases on dilution. Molar conductivity increases with decrease in concentration. This is because that total volume, V, of solution containing one mole of electrolyte also increases. It has been found that decrease in K on dilution of a solution is more than compensated by increase in its volume. The conductivity of 0.

Calculate its molar conductivity. The resistance of a conductivity cell containing 0. The conductivity of NaCl at K has been determined at different concentrations and the results are given below: Sol:. Conductivity of 0. How much electricity is required in coulomb for the oxidation of i 1 mol of H 2 O to 0 2 ii 1 mol of FeO to Fe 2 0 3 Sol:.

A solution of Ni N0 3 2 is electrolyzed between platinum electrodes using a current of 5 amperes for 20 minutes. What mass of Ni is deposited at the cathode? A steady current of 1. How long did the current flow? What mass ncert solutions class 10th chemistry chapter 3 swift copper and zinc were deposited?

Using the standard electrode potentials given in the table, predict if the ncert solutions class 10th chemistry chapter 3 swift between the following is feasible. Sol: A ncert solutions class 10th chemistry chapter 3 swift reaction can be feasible if e. Keeping this in mind, let us predict the feasibility of the reactions.

Ncert solutions class 10th chemistry chapter 3 swift the products of electrolysis in each of the following. Hence, the cell may be represented as follows : 3. Ans: 3. Outside Delhi Sol: 3. Write the Nernst equation and emf of the following cells at K: Sol: 3. In the button cells widely used in watches and other devices the following reaction takes place: Sol: 3.

Sol: 3. The conductivity of NaCl ncert solutions class 10th chemistry chapter 3 swift K has been determined at different concentrations and the results are given below: Sol: 3. How much electricity is required in coulomb for the oxidation of i 1 mol of H 2 O to 0 2 ii 1 mol of FeO to Fe 2 0 3 Sol: 3. RD Sharma Class 12 Solutions. Watch Youtube Videos.

Thus:

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