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Solutions and Phase Rule

Term 161

  • Q6(b) [6]: Explain the following terms: (i) Normality; (ii) Molarity; (iii) pH of Solutions.
  • Q6(c) [4]: Calculate the molality of a sulfuric acid solution containing 24.4g of sulfuric acid in 198g of water. The molar mass of sulfuric acid is 98.08.

Term 171

  • Q7(a) [8]: Write short notes on Normality and pH of solutions.
  • Q7(b) [6]: Show how the pH scale was established from ionic product of water.

Term 181

  • Q6(a) [4]: Explain the terms: (i) Normality; (ii) Molarity and (iii) Molality of a solution.
  • Q6(b) [6]: Calculate the normality and molarity of a solution containing 20.7g of K₂CO₃ dissolved in 500ml of the given solution.
  • Q6(c) [1+3]: What is meant by pH? Calculate the pH of 0.001N HCl assuming complete ionization of HCl.

Term 201

  • Q4(c) [4]: Draw the phase diagram of the water system and find the degrees of freedom in every region of this diagram.
  • Q6(b) [4]: State and derive the Raoult's law for dilute solution.
  • Q6(c) [4]: 5.3 g of Na₂CO₃ is dissolved in 1 Kg of water. If the density of the solution is 0.997gmL⁻¹, calculate the molarity and normality of the solution.
  • Q7(d) [2]: If a solution has a pH of 5.50 at 25°C, calculate its \([OH^-]\).

Term 211

  • Q4(b) [2+2]: What are colligative properties? Why are they called colligative properties?
  • Q4(c) [1+5]: What is the pH? Show that \(pK_w=pH+pOH\).
  • Q6(a) [2+3]: What is phase rule? Draw a phase diagram of water.