Advertisements
Advertisements
Question
What is enthalpy change and volume change of mixing of two components forming an ideal solution?
Advertisements
Solution
- No heat is evolved or absorbed when two components forming an ideal solution are mixed. Thus, ∆mixH = 0.
- There is no volume change when two components forming an ideal solution are mixed. Thus, ∆mixV = 0.
APPEARS IN
RELATED QUESTIONS
Choose the most correct option.
Vapour pressure of a solution is _______.
State Raoult’s law for the solutions of non-volatile solutes in volatile solvents.
Fish generally needs O2 concentration in water at least 3.8 mg/L for survival. What partial pressure of O2 above the water is needed for the survival of fish? Given the solubility of O2 in water at 0 °C and 1 atm-1 partial pressure is 2.2 × 10-3 atm mol/L.
The vapour pressure of water at 20°C is 17 mm Hg. What is the vapour pressure of solution containing 2.8 g urea in 50 g of water?
State Raoult’s law.
Distinguish between ideal and non-ideal solutions.
With the help of vapour pressure-temperature curves for solution and solvent, explain why boiling point of solvent is elevated when a nonvolatile solute is dissolved into it.
Explain with reasons and diagrams, the positive and negative deviations from Raoult’s law shown by nonideal solutions.
Which of the following statements is INCORRECT?
Which of the following metals is refined by vapour phase refining in Mond process?
Which of the following is NOT nonideal solution?
9 gram anhydrous oxalic acid (mol. wt. = 90) was dissolved in 9.9 moles of water. If vapour pressure of pure water is pf the vapour pressure of solution is ______.
If 1 mole of ____________ is added to 1 dm3 of water, the boiling point of water will decrease.
5.0 g of sodium hydroxide (molar mass 40 g mol-1) is dissolved in little quantity of water and the solution is diluted upto 100 mL. What is the molarity of the resulting solution?
A solution of acetone in ethanol ______.
18 g of glucose (C6H12O6) is added to 178.2 g of water. The vapour pressure of water for this aqueous solution at l00°C is ______.
Total vapour pressure of a mixture of 1 mole A`("p"_"A"^circ = 150 " torr")` and 2 mole B`("p"_"B"^circ = 240 " torr")` is 200 mm. In this case, ______.
The vapour pressures of two liquids A and B are 80 mmHg and 60 mm Hg respectively at 25°C. What is the vapour pressure of the solution obtained by mixing 3 moles of A and 2 moles of B?
Explain the variation of vapour pressures with mole fractions of binary solutions of two volatile liquids forming ideal solutions.
A mixture of two liquids A and B have vapour pressures 3.4 × 104 Mn-2 and 5.2 × 104 Nm-2. If the mole fraction of A is 0.85, find the vapour pressure of the solution.
The solutions that obey Raoult's law over entire range of concentrations are ______.
