0
What else can I help you with?
Why mercury falls in capillary tube?
Mercury falls in a capillary tube due to the combination of capillary action and gravity. Capillary action is the tendency of a liquid to be drawn up into a narrow tube against the force of gravity. When the adhesive forces between the mercury and the walls of the capillary tube are greater than the cohesive forces within the mercury, the mercury will move downward in the tube.
Why do you use a new capillary tube for melting point determination each time?
It is not easy to be cleaned inside.
The rise of water in a narrow test tube is called?
The rise around the edges is called the meniscus, like capillary action this is caused by the adhesion of the liquid molecules to the walls of the container. In a large bore tube like a test tube or graduated cylinder this pulls up the edge and creates a concave meniscus, in a smaller bore tube this actually pulls the liquid toward the top of the tube.
When water is placed in a thin glass tube it tends to climb up the walls of the tube This effect is known as capillary action What causes this capillary action?
Hydrogen Bonding
How do you test for the melting point?
🧪 Capillary Tube Method (Melting Point Apparatus Method) — Common in Labs Materials: Dry powdered sample Capillary tube (sealed at one end) Melting point apparatus or oil bath Thermometer or digital display Steps: Prepare the sample: Crush the solid if necessary into a fine powder for uniform heating. Fill the capillary tube: Tap some of the powder into the open end of the capillary tube until it's about 2–3 mm high. Insert the tube into the apparatus: Place the capillary tube in the melting point apparatus. If using an oil bath, secure the tube next to a thermometer for temperature reading. Heat gradually: Slowly increase the temperature (around 1–2 °C per minute as you approach the expected melting point). Observe carefully: Start of melting: Note the temperature when the solid just begins to liquefy. End of melting: Note the temperature when the substance is completely melted. The melting point is typically reported as a range (e.g., 120–122 °C). 🔬 Digital Melting Point Devices (Modern Labs) These devices automatically detect the melting point using built-in cameras and sensors. More accurate and user-friendly but more expensive. 📝 Important Notes A pure compound melts over a narrow range (1–2 °C). An impure compound will melt over a broader and lower range. Always repeat the test to confirm accuracy.See more..
If the boiling point is recorded when the bubbles are rapidly escaping the capillary tube will it be recorded too high or low?
it will be too low
What is another name for a test tube?
another name for test tube is culture tube or sample tube
What is a thiele tube is used to?
A Thiele tube is a simple device used in chemistry for measuring the melting or boiling points of substances. It consists of a capillary tube attached to a thermometer and is immersed in the substance being tested. Changes in temperature are observed to determine the melting or boiling point accurately.
The height of a liquid in a capillary tube is not dependent on?
the height of a capillary tube is not dependent on
Why mercury falls in capillary tube?
Mercury falls in a capillary tube due to the combination of capillary action and gravity. Capillary action is the tendency of a liquid to be drawn up into a narrow tube against the force of gravity. When the adhesive forces between the mercury and the walls of the capillary tube are greater than the cohesive forces within the mercury, the mercury will move downward in the tube.
Why can't we reuse a capillary tube to determine the melting point for a second time?
ur muff cabbage
Why do you use a new capillary tube for melting point determination each time?
It is not easy to be cleaned inside.
Why is capillary tube fixed in Ostwalds viscometer?
The capillary tube is fixed in the Ostwalds viscometer is for passing the liquid.
What is the function of capillary tube?
The capillary tube is used on the inside of the refrigerators. It is a long copper tubing that is used as a thruster.
Blood leaves the capillary thorugh a tube called a?
Blood leaves a capillary through a venule, a small vein. At that point, the blood is making its journey back towards the heart.
Derive an expression for expression for rise of liquid in a capillary tube?
deduce an expression for height of a liquid in capillary tube. also write practical applications of capillary action.
How can you measure the diameter of capillary tube by using vernier caliper in traveling microscope?
To measure the diameter of a capillary tube using a traveling microscope and vernier caliper, place the capillary tube on a flat surface. View the capillary tube through the traveling microscope to measure the external diameter. Then, use the vernier caliper to measure the internal diameter by gently inserting the capillary tube between the jaws of the caliper to get an accurate measurement. Subsequently, calculate the average diameter using the two measurements.
