0
The scope is to avoid interferences between different metals.
What else can I help you with?
WHY CONCENTRATED HCL IS USED IN FLAME TEST?
Concentrated HCl is used in flame tests to clean the metal wire loop before dipping it into the sample and to remove any impurities that may interfere with the observation of the flame color produced by the metal ions. Additionally, HCl helps to prevent contamination between different samples being tested on the same wire loop.
Why is hydrochloric acid used in cleaning the wire loop can other acids be used?
Hydrochloric acid is used in cleaning the wire loop because it is effective in removing any organic residue on the loop. Other acids could be used, but hydrochloric acid is commonly preferred due to its efficacy, availability, and cost-effectiveness. Additionally, the reaction between hydrochloric acid and organic materials produces non-toxic byproducts.
Why is hydrochloric acid used in cleaning the platinum loop?
Hydrochloric acid is used to clean the platinum loop because it can dissolve any residues or impurities that may be present on the surface of the loop, helping to maintain its purity and prevent contamination. This acid is effective in removing organic material and is safe to use with platinum due to its resistance to corrosion.
Can we clean nichrome wire with sulphuric acid?
No, it is not recommended to clean nichrome wire with sulfuric acid as it can cause corrosion and damage to the wire. It is safer to use a mild solvent or a cleaning agent specifically designed for cleaning metal surfaces.
What is a wire brush used for in chemistry?
A wire brush is used in chemistry to help clean glassware and remove stubborn residues that may be difficult to remove with regular cleaning methods. The wire bristles can effectively scrub away contaminants without scratching the glassware.
What is the shape of the loop of wire in the scenario where a loop of wire is in the shape of two concentric semicircles as shown?
The shape of the loop of wire is two concentric semicircles.
What happens when no net force acts on a loop of wire in a magnetic field?
When no net force acts on a loop of wire in a magnetic field, the loop will not experience any acceleration or movement.
Why is it required a clean wire loop in order to observe a spectrum?
Classic Wire Loop MethodFirst, you need a clean wire loop. Platinum or nickel-chromium loops are most common. They may be cleaned by dipping in hydrochloric or nitric acid, followed by rinsing with distilled or deionized water. Test the cleanliness of the loop by inserting it into a gas flame. If a burst of color is produced, the loop is not sufficiently clean. The loop must be cleaned between tests.The clean loop is dipped in either a powder or solution of an ionic (metal) salt. The loop with sample is placed in the clear or blue part of the flame and the resulting color is observed.Wooden Splint or Cotton Swab MethodWooden splints or cotton swabs offer an inexpensive alternative to wire loops. To use wooden splints, soak them overnight in distilled water. Pour out the water and rinse the splints with clean water, being careful to avoid contaminating the water with sodium (as from sweat on your hands). Take a damp splint or cotton swab that has been moistened in water, dip it in the sample to be tested, and wave the splint or swab through the flame. Do not hold the sample in the flame as this would cause the splint or swab to ignite. Use a new splint or swab for each test.
What are the difference between a wire loop and a wire needle?
ewan ko
Why if the same current flows in a wire coil and a single wire loop the magnetic field inside the coil is stronger than the field inside the loop?
why, if the same current flows in a wire coil and a single loop, the magnetic field inside the coil stronger than the field inside the loop
What are the essential parts of a transformer?
A magnetic core made of iron laminations, forming a closed loop, and two or more coils of copper wire wound to intersect the core.
A loop of wire is placed within a magnetic field If the loop of wire is stationary as is the magnetic field will a current be induced in the wire?
No it will not. In order to get electrical activity you need motion. Either the magnet or the wire must move.
What factors will increase the current in a stationary wire loop?
Increasing the strength of the magnetic field passing through the loop, increasing the number of turns in the wire loop, or increasing the speed at which the magnetic field changes can all increase the current in a stationary wire loop through Faraday's law of electromagnetic induction.
When electric currents runs through a loop of wire it makes and what?
When an electric current runs through a loop of wire, it generates a magnetic field around the wire. This phenomenon is known as electromagnetism.
What factors determine the magnitude of induced current in a wire loop when exposed to a changing magnetic field?
The magnitude of induced current in a wire loop when exposed to a changing magnetic field is determined by factors such as the strength of the magnetic field, the rate of change of the magnetic field, the number of turns in the wire loop, and the resistance of the wire.
Why the loop is flamed after completing the inoculation?
because when we inoculate the culture with wire loop,some organism may be sticked to it which may be harmful or can cause trouble.so to destroy the remaining organisms wire loop is flamed again.
What describes the production of an electric current by moving a loop of wire through a magnetic field or moving a magnet through a wire loop?
moving a loop of wire through a magnetic Field. The rotation of a coil of copper wire trough a magnetic field changes magnetic field as "seen" from the coil inducing an alternating current.
