Diffusion in Liquids | ReaktiLabX – 02
The Diffusion in Liquids ReaktiLabX – 02 studies mass transfer through diffusion in liquid solutions using a U-tube with capillaries. This Diffusion in Liquids apparatus features a transparent tank, magnetic stirrer with heater, and conductivity meter for tracking salt concentration. It supports determination of diffusion coefficients based on Fick’s law under controlled temperature conditions. Optional DAQ software enables measurement and calculation of results.
The Diffusion in Liquids ReaktiLabX – 02 studies microscopic mass transfer of particles like atoms, molecules, and ions occurring through diffusion due to changes in concentration. This Diffusion in Liquids apparatus uses a concentrated salt solution and a U-shaped tube with capillaries to study diffusion behavior. Diffusion is critical to a number of processes, including assembling the components of chemical reactions.
Product Overview
Due to changes in concentration, microscopic mass transfer of particles like atoms, molecules, and ions occurs through diffusion. It is critical to a number of processes. Diffusion, for instance, can assemble the components of chemical reactions, and it sometimes acts as the process’s rate-limiting phase. This Diffusion in Liquids apparatus has a feature for diffusion in liquids.
A concentrated salt solution is used to study diffusion in liquids. A U-shaped tube holding the solution contains a disc at one end with a number of vertical capillaries. The disc with the capillaries is positioned below the water’s surface by submerging the U-tube into a tank filled with demineralized water. The salt ions are produced by the concentration gradient between the solution and the water.
The ions only flow in one dimension thanks to the capillaries. The presence of a stirrer in the tank prevents concentration variations in the tank by preventing the salt concentration from rising close to the disc. The amount of salt in the tank is measured using a conductivity meter.
Diffusion in Liquids ReaktiLabX – 02 — Technical Specifications
| Specification | Detail |
|---|---|
| Study Scope | Investigation of diffusion in liquids |
| Setup | Transparent tank with magnetic stirrer, conductivity meter, and U-tube with capillaries for investigating diffusion in aqueous solutions |
| Temperature Control | Heater with controller and sensor for adjusting the temperature in the water bath |
Technical Data
Tank with Stirrer
| Parameter | Value |
|---|---|
| Capacity | approx. 1000mL |
Magnetic Stirrer with Heater
| Parameter | Value |
|---|---|
| Speed stirrer | 0~500rpm |
| Heater Power | approx. 300W |
| Magnetic stirrer bar | 1 |
Diffusion Tube
| Parameter | Value |
|---|---|
| Type | U-Tube |
| Capillaries | 250~300 |
| Diameter | 1mm |
| Length | 5~8mm |
Conductivity Meter
| Parameter | Value |
|---|---|
| Range | 0~2000uS/cm |
| Graduation | 1uS/cm |
Measuring Ranges
| Parameter | Value |
|---|---|
| Temperature | 100~400°C |
| Conductivity | 0~200mS/cm |
Key Features
- Tank Capacity: approx. 1000mL
- Magnetic Stirrer: speed 0~500rpm, single stir bar
- Heater: approx. 300W power
- Diffusion Tube: U-Tube type, 250~300 capillaries, 1mm diameter, 5~8mm length
- Conductivity Meter: range 0~2000uS/cm, 1uS/cm graduation
- Temperature Range: 100~400°C
- Conductivity Range: 0~200mS/cm
- Concentration Control: stirrer prevents salt concentration variations near the disc, central to accurate measurement on this Diffusion in Liquids apparatus
- Software: optional DAQ software for measurement and calculation
Experiments
- Fundamentals of diffusion: Fick’s law
- Derivation of the calculation formula for the diffusion coefficients for the given experimental conditions
- Determination of the diffusion coefficient for the mass transport in liquid
Construction and Design
The Diffusion in Liquids ReaktiLabX – 02 includes a transparent tank, approximately 1000mL capacity, fitted with a magnetic stirrer and heater, operating at 0 to 500rpm with a single stirrer bar and heater power of approximately 300W. A U-tube diffusion tube, with 250 to 300 capillaries, 1mm in diameter and 5 to 8mm in length, holds the concentrated salt solution, positioned below the water’s surface when submerged in the tank of demineralized water. A conductivity meter, ranged 0 to 2000uS/cm with 1uS/cm graduation, measures the amount of salt in the tank. The system supports temperature monitoring from 100 to 400°C and conductivity measurement from 0 to 200mS/cm.
Software
Software ReaktiLabX – 02 (optional). DAQ software specially designed in National Instrument™, LABVIEW™ environment to measure and calculate the results of the apparatus. The software is optional; a set of electronic sensors is included when the software is used. The software can be run with any Windows™ environment.
Scope of Delivery
- 1 experimental unit for diffusion in liquids
- 1 U-tube with capillaries
- 1 display and control unit
- 1 conductivity meter
- 1 magnetic stirrer with heater
- 1 stopwatch
- 1 set of instructional material
Q: What is the Diffusion in Liquids ReaktiLabX – 02 used for?
A: It is used to study diffusion in liquids, determining diffusion coefficients for mass transport based on Fick’s law.
Q: How is diffusion measured in this apparatus?
A: A concentrated salt solution flows from a U-tube with capillaries into demineralized water, with the salt concentration in the tank measured using a conductivity meter.
Q: What is the tank capacity for this diffusion study?
A: The tank has a capacity of approximately 1000mL.
Q: Is data acquisition software available with this system?
A: Yes, Software ReaktiLabX – 02 is available as an optional add-on, designed in National Instrument™ LABVIEW™ environment, and can run with any Windows™ environment.
Q: What is the diffusion tube’s construction?
A: The diffusion tube is a U-Tube type with 250 to 300 capillaries, each 1mm in diameter and 5 to 8mm in length.
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