Alternative definition of Henry's law

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(a)

Konowaloff's rule.

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(a)

How many grams of sucrose (M.wt. = 342) should be dissolved in 100g water in order to produce a solution with 105.0°C difference between the freezing point and the boiling point ?(K_f = 1.86°C/m, K_b = 0.51°C/m)

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(a)

(a)  Differentiate between molarity and molality for a solution. How does a change in temperature influence their values?
(b) Calculate the freezing point of an aqueous solution containing 10.50 g of MgBr₂ = 184 g) (K _f for water 1.86 K kg mol^-1)

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(a)

(a) The molecular masses of polymers are determined by osmotic pressure method and not by measuring other colligative properties. Give two reasons.
(b) At 300 K, 36 g of glucose, C₆H₁₂O₆ present per litre in its solution has an osmotic pressure of 4.98 bar. If the osmotic pressure of another glucose solution is 1.52 bar at the same temperature, calculate the concentration of the other solution.

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(a)

The boiling point of carbon tetrachloride is 77^oC and its heat of vaporisation is 31 kJ mol^-1. Calculate the vapour pressure of carbon tetrachloride in atmospheres at 25^oC.

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(a)

Calculate the density of H₂SO₄ solution if its molality and molarity are 94.5 and 11.5 respectively.

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(a)

Calculate the molarity of a solution of CaCI₂ if on chemical analysis it is found that 200 ml of CaCI₂ solution contains \(3.01\times { 10 }^{ 22 }\) chloride ions.

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(a)

The degree of dissociation of Ca(NO₃ )₂ in dilute solution aqueous solution containing 7.0g of the solute per 100g of water at 100⁰ C is 70 percent. If the vapour pressure of water at 100⁰ C is 760mm, calculate the vapour pressure of the solution. (746.02mm).

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(a)