Q35 : A summing that Vaq = 50 mL and a partition coefficient of KD =...

Q35 :	A summing that Vaq = 50 mL and a partition coefficient of K_D = 4, calculate the fraction of the solute that remains in the aqueous phase after four extractions using 25 mL of organic solvent for each extraction.
A.	0.12	B.	0.033
C.	0.012	D.	0.33
Q36 :	What is the major problem in settlers?
A.	The two phases may not be visible	B.	The size of dispersed particles can be large
C.	Colour of the two phases may be same	D.	Emulsification in the mixing wheel
Q37 :	In fractional distillation, a mixture of liquids is separated based on their:
A.	Density	B.	Chemical composition
C.	Boiling point	D.	Solubility
Q38 :	What happens at equilibrium during sublimation?
A.	Vapor pressure of solid is equal to partial pressure of solute in liquid	B.	Vapor pressure of solid is equal to partial pressure of solute in gas
C.	Vapor pressure of liquid is equal to solid	D.	Vapor pressure of solid is equal to vapor pressure of gas
Q39 :	Which type of liquid-liquid extraction is efficient:
A.	Multistage cross current	B.	Single stage
C.	Multistage counter current	D.	Multistage co current
Q40 :	Example of filter for continuous mode of filtration
A.	Tubular	B.	Rotary vacuum
C.	Plate and frame	D.	Spiral wound

Solutions

Expert Solution

Q 35:

option C is the correct answer.

information given:

solute is present in water only.

we will assume that the water and organic solvent are immiscible and only the solute is transferred between the two phases. therefore, the raffinate and aqueous feed streams will be equal.

and, the solvent and extract feed streams will be equal.

partition coefficient, KD is defined as the ratio of the concentration of solute in organic solvent to the concentration of solute in aqueous solution after extraction.

..............(1)

Amanda K answered 4 months ago

Next > < Previous

Related Solutions

explain the theory of partition coefficient

Assume that the distribution coefficient (Kd) for Hg(II) is 104.9 (log Kd=4.9), the concentration of suspended...

Assume that the distribution coefficient (Kd) for Hg(II) is 104.9 (log Kd=4.9), the concentration of suspended sediments (Csed) is 10 mg L-1, the settling velocity (vs) of the silt-size particles is 4.17 cm hr-1, the area (A) of the water body is 50 km2 and the mean depth (H) is 6 m. What is the rate constant for removal of Hg(II) by scavenging, in units of per day?

Suppose that the partition coefficient for an amine, B, is K = 3.0 and the acid...

Suppose that the partition coefficient for an amine, B, is K = 3.0 and the acid dissociation constant for BH+ is Ka = 1.0 x 10−9. If 50.0 mL of 0.010 M aqueous amine is extracted with 100.0 mL of solvent two times, what percentage amine remains in aqueous solution if the pH of the aqueous phase is 9.00?

A monoprotic acid, HA, with a Ka of 6.35 × 10-5 has a partition coefficient of...

A monoprotic acid, HA, with a Ka of 6.35 × 10-5 has a partition coefficient of 4.5 (favoring octanol) when distributed between water and octanol. Find the formal concentration of the acid in each phase when 100 mL of 0.100 M aqueous acid is extracted with 35 mL of octanol. a. at pH 4.00 -in water ___ M -in octanol ___ M b. at pH 9.00 -in water ___ M -in octanol ___ M

3.The partition coefficient of Compound A is 7.5 in dichloromethane (a.k.a. methylene chloride) with respect to...

3.The partition coefficient of Compound A is 7.5 in dichloromethane (a.k.a. methylene chloride) with respect to water. a- If 5 grams of Compound A were dissolved in 100 mL of water, how much of Compound A would be extracted with four 25-mL portions of dichloromethane? Extraction 1: Extraction 2: Extraction 3: Extraction 4: b- a.After four extractions, what percentage of the Compound A has been extracted (use percent recovery)? c- a.You are tired and want to finish your experiment as...

what are the advantages and disadvantages of determining the actanol-water partition coefficient of compounds by oscillation...

what are the advantages and disadvantages of determining the actanol-water partition coefficient of compounds by oscillation method?

3.The partition coefficient of Compound A is 7.5 in dichloromethane (a.k.a. methylene chloride) with respect to...

3.The partition coefficient of Compound A is 7.5 in dichloromethane (a.k.a. methylene chloride) with respect to water. If 5 grams of Compound A were dissolved in 100 mL of water, how much of Compound A would be extracted with four 25-mL portions of dichloromethane? Extraction 1: Extraction 2: Extraction 3: Extraction 4: b.After four extractions, what percentage of the Compound A has been extracted (use percent recovery)? c.You are tired and want to finish your experiment as quickly as possible....

Assume an organic compound has a partition coefficient between water and ether equal to 6.90. If...

Assume an organic compound has a partition coefficient between water and ether equal to 6.90. If there are initially 6.96 grams of the compound dissolved in 80.0 mL of water, how many grams will remain in the aqueous layer after extraction with one 25.0 mL portion of ether?

In a calorimeter, we added 50 mL of 1M HCl to 50 mL of 1.1 M...

In a calorimeter, we added 50 mL of 1M HCl to 50 mL of 1.1 M NH3 which produces NH4Cl. If the temperature increased 5.0 degrees Celsius, what is the molar enthalpy? We weren't given a heat capacity for the calorimeter but it was made out of a glass beaker and the heat capacity of glass is 0.840 J/goC found on google.

What is the pH when 50 ml of 0.040 M NaOH is mixed with 50 ml...

What is the pH when 50 ml of 0.040 M NaOH is mixed with 50 ml of 0.040 M HN3 (Ka= 1.9*10^-5)

Subjects