JEE Advanced Mi...

The molar conductance of NaCl varies with the concentration as shown in the following table and all values follows the equation

When a certain conductivity cell (C) was filled with 25 x 10^–4 (M) NaCl solution. The resistance of the cell was found to be 1000 ohm. At Infinite dilution, conductance of Cl– and SO4^–2 are 80 ohm^–1 cm² mole^–1 and 160 ohm^–1 cm² mole^–1 respectively.

What is the molar conductance of NaCl at infinite dilution ?

The molar conductance of NaCl varies with the concentration as shown in the following table and all values follows the equation

When a certain conductivity cell (C) was filled with 25 x 10^–4 (M) NaCl solution. The resistance of the cell was found to be 1000 ohm. At Infinite dilution, conductance of Cl– and SO₄^–2 are 80 ohm^–1 cm² mole^–1 and 160 ohm^–1 cm² mole^–1 respectively.

What is the cell constant of the conductivity cell (C) ?

The molar conductance of NaCl varies with the concentration as shown in the following table and all values follows the equation

When a certain conductivity cell (C) was filled with 25 x 10^–4 (M) NaCl solution. The resistance of the cell was found to be 1000 ohm. At Infinite dilution, conductance of Cl– and SO₄^–2 are 80 ohm^–1 cm² mole^–1 and 160 ohm^–1 cm² mole^–1 respectively.

If the cell (C) is filled with 5 x 10^–3 (N) Na₂SO₄ the obserbed resistance was 400 ohm. What is the molar conductance of Na₂SO₄?

Properties, whose values depend only on the concentration of solute particles in solution and not on the identity of the solute are called colligative properties. There may be change in number of moles of solute due to ionisation or association hence these properties are also affected. Number of moles of the product is related to degree of ionisation or association by vant Hoff factor ‘i’ given by i = [ 1 + (n – 1) α] for dissociation where n is the number of products (ions or molecules) obtained per mole of the reactant & i =  for association.

Where n is number of reactant particles associated to give 1 mole product. A dilute solution contains ‘t’ moles of solute X in 1 Kg of solvent with molal elevation constant Kb. The solute dimerises in the solution according to the following equation. The degree of association is α.

The vant Hoff factor will be [if we start with one mole of X]

Properties, whose values depend only on the concentration of solute particles in solution and not on the identity of the solute are called colligative properties. There may be change in number of moles of solute due to ionisation or association hence these properties are also affected. Number of moles of the product is related to degree of ionisation or association by vant Hoff factor ‘i’ given by i = [ 1 + (n – 1) α] for dissociation where n is the number of products (ions or molecules) obtained per mole of the reactant & i =  for association.

Where n is number of reactant particles associated to give 1 mole product. A dilute solution contains ‘t’ moles of solute X in 1 Kg of solvent with molal elevation constant Kb. The solute dimerises in the solution according to the following equation. The degree of association is α.

The colligative properties observed will be

Properties, whose values depend only on the concentration of solute particles in solution and not on the identity of the solute are called colligative properties. There may be change in number of moles of solute due to ionisation or association hence these properties are also affected. Number of moles of the product is related to degree of ionisation or association by vant Hoff factor ‘i’ given by i = [ 1 + (n – 1) α] for dissociation where n is the number of products (ions or molecules) obtained per mole of the reactant & i =  for association.

Where n is number of reactant particles associated to give 1 mole product. A dilute solution contains ‘t’ moles of solute X in 1 Kg of solvent with molal elevation constant K_b. The solute dimerises in the solution according to the following equation. The degree of association is α.

The equilibrium constant for the process can be expressed as

Two roads OA and OB intersect at an angle of 60º. A car driver approaches O from A where OA = 800m at a uniform speed of 20m/s. Simultaneously another car moves from O towards B at a uniform speed of 25m/s. If t is time when two cars are closest, find t.

If f(x) satisfies x + |f (x)| = 2f (x) then f^–1 (x) satisfies