Expansion of Liquid Apparatus
Product Code : EL-POM-10372
Quick answer: The expansion of liquid apparatus compares how much different liquids expand when heated through the same temperature range. Five graduated glass capillary tubes of equal bore, each with a bulb, stand in a support frame, and the bulbs are warmed together in hot water in the metal trough. Lab Exports manufactures it in Delhi for schools, colleges and universities.
Specifications
| Item | Specification |
|---|---|
| Capillary tubes | 5, glass, graduated, equal bore |
| Bulbs | One at the foot of each capillary tube |
| Frame | Support frame with metal trough |
| Supplied as | Complete with all accessories, including glass parts |
| Principle shown | Comparative thermal expansion of liquids |
How the expansion of liquids experiment is done
When a liquid is heated its volume grows by Delta V = gamma x V x Delta T, where gamma is its coefficient of volume (cubical) expansion. All five bulbs sit in the same trough, so every liquid has the same temperature rise; and because the capillaries have equal bore, the rise of each column is proportional to the increase in volume. With the bulbs filled to the same starting mark, the column heights can be compared directly to rank the liquids by how much they expand.
- Fill each bulb and its capillary with a different liquid, such as water, coloured alcohol, glycerine or paraffin oil, up to the same starting mark.
- Mount the tubes in the support frame with the bulbs inside the metal trough.
- Pour hot water into the trough so that all five bulbs are heated together.
- After a few minutes, read the new level on each graduated capillary and record the rise.
At the very start the columns may dip slightly, because the glass bulbs warm and expand before the liquids do. The readings therefore show apparent expansion, the difference between the expansion of the liquid and that of the glass. Alcohol usually rises much further than water, whose expansion near room temperature is small.
Key features
- Five capillary tubes, so five liquids can be compared in one run
- Equal bore on every tube for a fair comparison of column rise
- Graduated capillaries for direct reading of the rise
- Metal trough that heats all the bulbs in the same bath
- Supplied complete with all accessories, including the glass parts
Documentation and supply
Installation instructions and a manual are supplied with the apparatus. Most Lab Exports products carry a one-year manufacturer warranty.
Lab Exports manufactures the expansion of liquid apparatus at its works in Laxmi Nagar, Delhi, and supplies it to schools, colleges and universities in India and 60+ countries, handling the export documents for each shipment. More about the company is on the About Lab Exports page.
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- Pascal Law Apparatus, Weinholds Type (EL-POM-10370)
- Charles Law Apparatus, Basic (EL-POM-10374)
- Bernoulli Tube Apparatus (EL-POM-10369)
- Boyles Law Apparatus, Advanced with Oil (EL-POM-10375)
The full range is in the Properties of Matter section of the Physics Lab range.
Frequently asked questions
What does the expansion of liquid apparatus show?
It shows that different liquids expand by different amounts when heated through the same temperature range.
How many liquids can be compared at once?
Five, one in each of the five graduated capillary tubes of equal bore.
How are the liquids heated?
The bulbs sit in the metal trough, which is filled with hot water so that all of them warm together.
What is the price of the expansion of liquid apparatus?
Prices are not published on the website. Add the expansion of liquid apparatus to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code EL-POM-10372 and the quantity, to receive a quotation.
Does Lab Exports manufacture the expansion of liquid apparatus?
Yes. Lab Exports manufactures the expansion of liquid apparatus at its works at 11/315, Lalita Park, Laxmi Nagar, Delhi 110092, under house code EL-POM-10372.
Request a quote
Email [email protected] with the house code EL-POM-10372 and the quantity, or add the expansion of liquid apparatus to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.
