State Henry’s law. What is the effect of temperature on the solubility of a gas in a liquid ?
The relationship between pressure and solubility is guided by Henry’s law. According to this law, “The mass of a gas dissolved in given volume of the liquid at a constant temperature depends upon the pressure which is applied.” It can also be stated as the partial pressure of the gas in vapour phase (p) is proportional to the mole fraction of the gas (χ) in the solution.
where = Henry’s constant.
Effect of Temperature on the Solubility : The solubility of a gas decreases with increase in temperature. This is because dissolution of gases in the liquids is an exothermic process. Therefore,
according to Le-Chatelier’s principle, the increase in temperature results in decrease in the solubility of the gas.
where = Henry’s constant.
Effect of Temperature on the Solubility : The solubility of a gas decreases with increase in temperature. This is because dissolution of gases in the liquids is an exothermic process. Therefore,
according to Le-Chatelier’s principle, the increase in temperature results in decrease in the solubility of the gas.
What type of intermolecular attractive interaction exists in the pair of methanol and acetone ?
The following curve is obtained when molar conductivity is plotted against the square root of concentration, c½ for two electrolytes A and B :
State Kohlrausch law of independent migration of ions. Why does the conductivity of a solution decrease with dilution ?
Following reactions can occur at cathode during the electrolysis of aqueous silver nitrate solution using Pt electrodes:
(i) State the law which helps to determine the limiting molar conductivity of weak electrolyte.
(ii) Calculate limiting molar conductivity of CaSO₄ (limiting molar conductivity of calcium and sulphate ions are 119.0 and 160.0 Scm² mol⁻¹ respectively)
Name the following :
(i) A transition metal which does not exhibit variation in oxidation state in its compounds.
(ii) A compound where the transition metal is in the +7 oxidation state.
(iii) A member of the lanthanoid series which is well known to exhibit +4 oxidation state.
(iv) Ore used in the preparation of Potassium dichromate.
(i) Gas (A) is more soluble in water than Gas (B) at the same temperature. Which one of the two gases will have the higher value of KH (Henry’s constant) and why ?
(ii) In non-ideal solution, what type of deviation shows the formation of maximum boiling azeotropes ?
(i) Write the colligative property which is used to find the molecular mass of macromolecules.
(ii) In non-ideal solution, what type of deviation shows the formation of minimum boiling azeotropes?