(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 ?
(ii) In non-ideal solution, what type of deviation shows the formation of maximum boiling azeotropes ?
(i) Gas B will have the higher value of KH (Henry’s constant) as lower is the solubility of the gas in the liquid higher is the value of KH.
(ii) In non-ideal solution, negative deviation shows the formation of maximum boiling azeotropes
(ii) In non-ideal solution, negative 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?
Why a mixture of Carbon disulphide and acetone shows positive deviation from Raoult’s law? What type of azeotrope is formed by this mixture?
Explain why on addition of 1 mol of NaCl to 1 litre of water, the boiling point of water increases, while addition of 1 mol of methyl alcohol to one litre of water decreases its boiling point.
The partial pressure of ethane over a saturated solution containing 6.56 × 10⁻² g of ethane is 1 bar. If the solution were to contain 5.0 × 10⁻² g of ethane, then what will be the partial pressure of the gas ?
The vapour pressure of pure liquids A and B at 400 K are 450 and 700 mm Hg respectively. Find out the composition of liquid mixture if total pressure at this temperature is 600 mm Hg.
Which of the following aqueous solutions containing 10 g of solute in each case, has highest m.p.?
(a) NaCl solution
(b) KCl solution
(c) sugar solution
(d) glucose solution
State Raoult’s law for a solution containing nonvolatile solute. What type of deviation from Raoult’s law is shown by a solution of chloroform and acetone and why?
Define the following terms :
(i) Mole fraction (x)
(ii) Molality of a solution (m)
The conductivity of metals decreases while that of electrolytes increases with increase in temperature. Why?
State Raoult’s law for the solution containing volatile components. What is the similarity between Raoult’s law and Henry’s law ?
Explain the following observations:
(i) Copper atom has completely filled d orbitals (3d¹⁰) in its ground state, yet it is regarded as a transition element.
(ii) Cr²⁺ is a stronger reducing agent than Fe²⁺ in aqueous solution.
Why a mixture of Carbon disulphide and acetone shows positive deviation from Raoult’s law? What type of azeotrope is formed by this mixture?
In the following ions:
Mn³⁺, V³⁺, Cr³⁺, Ti⁴⁺
(Atomic no: Mn = 25, V = 23, Cr = 24, Ti = 22)
(a) Which ion is most stable in an aqueous solution?
(b) Which ion is the strongest oxidizing agent?
(c) Which ion is colourless?
(d) Which ion has the highest number of unpaired electrons?