Advertisements
Advertisements
प्रश्न
Answer the following in one or two sentences.
How is van’t Hoff factor related to degree of ionization?
उत्तर
The van’t Hoff factor is related to degree of ionization as follows:
i = 1 + α (n – 1)
or
α = `("i" - 1)/("n" - 1)`
where, α = Degree of ionization/dissociation
i = van’t Hoff factor
n = Moles of ions obtained from ionization of 1 mole of electrolyte.
APPEARS IN
संबंधित प्रश्न
Answer the following in one or two sentences.
A 0.1 m solution of K2SO4 in water has a freezing point of –4.3°C. What is the value of van’t Hoff factor if Kf for water is 1.86 K kg mol–1?
Answer the following in one or two sentences.
What is van’t Hoff factor?
Answer the following in one or two sentences.
Which of the following solution will have higher freezing point depression and why?
i. 0.1 m NaCl
ii. 0.05 m Al2(SO4)3
Answer the following in one or two sentences.
Which of the four colligative properties is most often used for molecular mass determination? Why?
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.
At T (K), the molar ionic conductivities of NH; and OH− at infinite dilution are 72 and 198 S cm2 mol−1 respectively. The molar conductivity of 0.01 M NH4OH solution at the same temperature is found to be 9 S cm2 mol−1. The percentage dissociation of NH4OH at this concentration is ____________.
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 ______.
Relationship between van't Hoff's factor (i) and degree of dissociation (α) is ______.
The osmotic pressure of a solution containing 10 g of cane sugar dissolved in 100 mL of water at 70°C is ____________.
If van't Hoff factor of monofluoroacetic acid in water is 1.076. What is it's degree of dissociation?
Which of the following salts of same concentration will have same value of van't Hoff factor as that of K4[Fe(CN)6]?
Which of the following equation is correct to determine osmotic pressure using van't Hoff equation?
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?
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.
Write modification of expressions of colligative properties with the help of van't Hoff factor.
Calculate the van't Hoff factor assuming the complete dissociation of NaBr in its aqueous solution.
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 ______.
