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Value of standard electrode potential fo...

Value of standard electrode potential for the oxidation of `Cl^-` ions is more positive than that of water, even then in the electrolysis of aqueous of water, even then in the electrolysis of aqueous sodium chloride, why is `Cl^-` oxidised at anode instead of water?

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The existence of negatively charged particle in an atom was shown by J.J. Thomson as a result of the studies of the passage of electricity through gases at extremely low pressure known as discharge tube experiments. When a high voltage of the order of 10,000 volts or more was impressed across the electrodes, some sort of invisible rays moved from the negative electrode to the positive electrode these rays are called as cathode rays. Cathode rays travel in straight path in absence of electrical and magnetic field . Cathode rays consist of material part and charged particles? Cathode rays produce X-rays and light is emitted when they strike on ZnS screen. Cathode rays penetrate through thin sheets of aluminium and other metals . They affect the photogenic plate and passes heating effect when they strike on metal foil. The raito of charge to mass i.e charge/mass is same for all the cathode rays irrespective of the gas used in the tube. The existence of positively charged particle in an atom was shown be E. Goldstein. He repeated the same discharge tube experiments by using a perforated cathode. It was observed that when a high potential difference was applied between the electrodes, not only cathode rays were produced but also a new type of rays were produced simultaneoulsy from anode moving towards cathode and passes through the holes or canal of the cathode. These termed as canal rays or anode rays. These rays travel in straight lines and consists of positively charged particles. These rays have kinetic energy and produces heating effect also. The e/m ratio of these rays is smaller than that of electrons. Unlike cathode rays, their e/m value is dependent upon the nature of the gas taken in the tube. These rays produced flashes of light on ZnS screen and can pass throughs thin metal foils. They can produce physical and chemical changes and are capable to produce ionisation in gases. For cathode rays the value of e/m:

The existence of negatively charged particle in an atom was shown by J.J. Thomson as a result of the studies of the passage of electricity through gases at extremely low pressure known as discharge tube experiments. When a high voltage of the order of 10,000 volts or more was impressed across the electrodes, some sort of invisible rays moved from the negative electrode to the positive electrode these rays are called as cathode rays. Cathode rays travel in straight path in absence of electrical and magnetic field . Cathode rays consist of material part and charged particles? Cathode rays produce X-rays and light is emitted when they strike on ZnS screen. Cathode rays penetrate through thin sheets of aluminium and other metals . They affect the photogenic plate and passes heating effect when they strike on metal foil. The raito of charge to mass i.e charge/mass is same for all the cathode rays irrespective of the gas used in the tube. The existence of positively charged particle in an atom was shown be E. Goldstein. He repeated the same discharge tube experiments by using a perforated cathode. It was observed that when a high potential difference was applied between the electrodes, not only cathode rays were produced but also a new type of rays were produced simultaneoulsy from anode moving towards cathode and passes through the holes or canal of the cathode. These termed as canal rays or anode rays. These rays travel in straight lines and consists of positively charged particles. These rays have kinetic energy and produces heating effect also. The e/m ratio of these rays is smaller than that of electrons. Unlike cathode rays, their e/m value is dependent upon the nature of the gas taken in the tube. These rays produced flashes of light on ZnS screen and can pass throughs thin metal foils. They can produce physical and chemical changes and are capable to produce ionisation in gases. Which is not true with respect to cathode rays?

The existence of negatively charged particle in an atom was shown by J.J. Thomson as a result of the studies of the passage of electricity through gases at extremely low pressure known as discharge tube experiments. When a high voltage of the order of 10,000 volts or more was impressed across the electrodes, some sort of invisible rays moved from the negative electrode to the positive electrode these rays are called as cathode rays. Cathode rays travel in straight path in absence of electrical and magnetic field . Cathode rays consist of material part and charged particles? Cathode rays produce X-rays and light is emitted when they strike on ZnS screen. Cathode rays penetrate through thin sheets of aluminium and other metals . They affect the photogenic plate and passes heating effect when they strike on metal foil. The raito of charge to mass i.e charge/mass is same for all the cathode rays irrespective of the gas used in the tube. The existence of positively charged particle in an atom was shown be E. Goldstein. He repeated the same discharge tube experiments by using a perforated cathode. It was observed that when a high potential difference was applied between the electrodes, not only cathode rays were produced but also a new type of rays were produced simultaneoulsy from anode moving towards cathode and passes through the holes or canal of the cathode. These termed as canal rays or anode rays. These rays travel in straight lines and consists of positively charged particles. These rays have kinetic energy and produces heating effect also. The e/m ratio of these rays is smaller than that of electrons. Unlike cathode rays, their e/m value is dependent upon the nature of the gas taken in the tube. These rays produced flashes of light on ZnS screen and can pass throughs thin metal foils. They can produce physical and chemical changes and are capable to produce ionisation in gases. Select the incorrect statement.

Choose the correct set of True/Fasle for following statements: (i) Silver chloride is more soluble in very concentrated sodium chloride solution than in pure water. (ii) The pH of a buffer solution does not change on addition of small amount of an acid or a base. (iii) Addition of NH_(4)Cl does not affect the pH of a solution of NH_(4)OH (iv) Degree of hydrolysis of ammonium acetate does not depend upon the concentration of ammonium acetate solution. (v) A mixture of acetic acid and sodium acetate can act as buffer solution.

At a same temperature, hydrogen is more soluble in water than helium. Which of them will have a higher value of k_H and why?

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0.2 mole of HCl and 0.2 mole of barium chloride were dissolved in water to produce a 500mL solution. The molarity of the Cl- ions is :

STATEMENT-1: If SOP of substance is less than -1.23 V and over voltage=0V, then its oxidation in its aqueous solution is not possible at 298 K. , STATEMENT-2: Standard reduction potential (SRP) of water is +1.23V.

The value of the ion product constant for water, (K_(w)) at 60^(@) C is 9.6xx10^(-14) M^(2) what is the [H_(3)O^(+)] of a neutral aqueous solutoin at 60^(@) C and an aqueous solution with a pH=7.0 at 60 ^(@) C are respectively?

Calculate the freezing point of a one molar aqueous solutoin (density 1.04gL^-1) of KCl. ( K_f of water=1.86Kg mol^-1 , atomic masses of K=39, Cl=35.5)

MODERN PUBLICATION-ELECTROCHEMISTRY-EXERCISE
  1. Value of standard electrode potential for the oxidation of Cl^- ions i...

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  2. The resistance of a 0.25 mol or solution of an molar solution of an el...

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  3. What is molar conductivity of an electrolyte? Solution containing 0.1 ...

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  4. Explain the variation in molar conductivity of weak electrolyte with c...

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  5. Calculate the resistance of 0.01N solution of an electrolyte whose equ...

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  6. The resistance of a 0.5 M solution of an electrolyte in a conductivity...

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  7. A conductance cell was filled with a 0.02 M KCl solution which has a s...

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  8. The conductivity of a solution containing 1.0 g of anhydrous BaCl2 in ...

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  9. The resistance of a 0.5M solution of an electrolyte was found to be 30...

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  10. A conductance cell was filled with a 0.02 M KCl solution which has a s...

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  11. When a certain conductance cell was filled 0.1 mol L^-1 KCl, it has a ...

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  12. The resistance of a conductivity cell with 0.1 M KCl solution is found...

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  13. The resistance of a conductivity cell with 0.1 M KCl solution is found...

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  14. The molar conductivity of 0.04 M solution of MgCl2 is 200 Scm^3mol^(-1...

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  15. Specific conductivity of N/35 KCl at 298K is 0.002768 ohm^-1 cm^-1 and...

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  16. The molar conductance of KCl solution at different concentration at 29...

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  17. The conductance of 0.1 M acetic acid at 298 K is 5.20 and that of 0.00...

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  18. The specific conductance of a saturated solution of AgCl at 298K is fo...

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  19. The lamda^(@) values of KNO(3) and LiNO(3) are 145.0 and 110.1 S cm^(2...

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  20. The conductivity of a 0.01M solution of acetic acid at 298K is 1.65xx1...

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  21. The molar conductivity at infinite dilution for NH4Cl, NaOH and NaCl k...

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