Advertisements
Advertisements
प्रश्न
Answer the following in one or two sentences.
What is van’t Hoff factor?
Advertisements
उत्तर
The ratio of the observed (experimental) value of a colligative property to the normal (calculated) value of the same property is termed as van’t Hoff factor (i).
APPEARS IN
संबंधित प्रश्न
Answer the following in one or two sentences.
Which of the four colligative properties is most often used for molecular mass determination? Why?
Derive the relationship between the degree of dissociation of an electrolyte and van’t Hoff factor.
At 25 °C, a 0.1 molal solution of CH3COOH is 1.35 % dissociated in an aqueous solution. Calculate the freezing point and osmotic pressure of the solution assuming molality and molarity to be identical.
A 0.15 m aqueous solution of KCl freezes at - 0.510 °C. Calculate i and osmotic pressure at 0 °C. Assume the volume of solution equal to that of water.
It a centimolal aqueous solution of K3[Fe(CN)6] has degree of dissociation 0.78. What is the value of van't Hoff factor?
Calculate van't Hoff-factor for 0.2 m aqueous solution of KCl which freezes at - 0.680°C. (Kf = 1.86 K kg mol-1).
If the van't Hoff-factor for 0.1 M Ba(NO3)2 solution is 2.74, the degree of dissociation is ______.
Osmotic pressure of a urea solution at 10°C is 500 mm Hg. Osmotic pressure of the solution become 105.3 mm Hg, when it is diluted and temperature is raised to 25°C. The extent of dilution is ____________.
The osmotic pressure of a solution containing 10 g of cane sugar dissolved in 100 mL of water at 70°C is ____________.
Which of the following salts of same concentration will have same value of van't Hoff factor as that of K4[Fe(CN)6]?
Van't Hoff factor for K3[Fe(CN)6] is 3.333. What is it's percentage dissociation in water?
Why is observed molar mass of acetic acid in benzene is greater than actual molar mass?
Which of the following equations is NOT correct for van't Hoff factor?
Which of following 0.1 m aqueous solution exhibits highest osmotic pressure at 25°C?
Solution of 'A' containing 1.73 g of it in 100 cm3 of water is found to be isotonic with a 3.42% (w/v) solution of sucrose. The molecular weight of A is ______. (At. mass C = 12, H = 1, 0 = 16)
Van't Hoff factor (i) for centimolal solution of \[\ce{K3[Fe(CN)6]}\] is 3.333. What is its percentage dissociation?
0.01 m aqueous formic acid solution freezes at – 0.021°C. Calculate its degree of dissociation, Kf = 1.86 K kg mol–1.
Calculate ΔTb and boiling point of 0.05 m aqueous solution of glucose. (Given: Kb = 0.52 K m−1).
The value of van't Hoff factor will be minimum for ______.
For 1 molal aqueous solution of the following compounds, which one will show the highest freezing point?
The depression in freezing point of 0.2 m aqueous solution of an electrolyte is 0.7 K. Calculate its percent degree of dissociation. [Kf for water = 1.86 K kg mol-1; n = 2]
