Why are anode rays dependent on gases?

Why are anode rays dependent on gases?

The anode rays consists of ionised gas molecule, which even if had the same charge may have different charge to mass ratio causing to change the nature of anode rays. So the anode rays dpend on the nature of gas.

Why cathode rays are not dependent on nature of gas?

Cathode ray experiment was repeated using different gases or different cathodes in the discharge tube. The properties of cathode rays do not undergo any change. Thus it was concluded that the nature of the cathode rays does not depend on the nature of the gas-filled inside the discharge tube or the cathode used.

Which ray depends on nature of gas?

The nature of anode rays depends upon the nature of the gas in the discharge tube.

Why the properties of positive rays depend upon the nature of gas?

The nature of positive rays produced in a vacuum discharge tube depends upon the nature of the gas filled. The positive rays consists of positive ions obtained by removing one or more electrons from gas molecules.

Does cathode ray depend on gas?

The characteristics of cathode rays do not depend upon the material of electrodes and the nature of the gas present in the cathode ray tube.

What is the role of gas in cathode ray experiment?

For better results in a cathode tube experiment, an evacuated (low pressure) tube is filled with hydrogen gas that is the lightest gas (maybe the lightest element) on ionization, giving the maximum charge value to the mass ratio (e / m ratio = 1.76 x 10 ^ 11 coulombs per kg).

Which gas is used in cathode rays?

In cathode ray experiment, in discharge tube 1, hydrogen gas is taken in tube 2 helium gas is taken will there by any difference in the em value of anode rays?

Why cathode rays are green in Colour?

The anode (positive terminal) is in the base of the tube at bottom. Cathode rays travel from the cathode at the rear of the tube, striking the glass front, making it glow green by fluorescence.

Why is cathode both positive and negative?

Because In an electrolytic cell, the reaction proceeds in the presence of an external potential helping it along. The battery pumps electrons away from the anode (making it positive) and into the cathode (making it negative).

Which gas is used in canal ray experiment?

During canal ray experiment for hydrogen gas, the e/m values obtained were not same Justify.

What does gas depend on?

The price of gasoline is made up of four factors: taxes, distribution and marketing, the cost of refining, and crude oil prices.

Which Ray is easily stopped by air?

Solution : Heavy `alpha` -particle are easily stopped by air.

Why positive rays are called canal rays?

Perforated cathode pass through the anode rays. They pass next by canals or holes which produce fluorescence. So, they pass with producing fluorescence. That’s why Anode rays are known as canal rays.

Why anode rays are positively charged?

anode rays are positively charged beam made up of positive ions or we can say that positive residence of atom.

Why the nature of anode rays depends upon nature of residual gas?

Positively charged rays depend only upon the nature of gas filled in the discharge tube and cannot exist without the gas present in the discharged tube. -Positive rays originate from anode and are directed toward the cathode which is a negatively charged electrode.

Why is the volume of gas collected at cathode?

Water is composed of 2 atoms of H and 1 atom of O. Therefore the amount of H is double than that of O. The two electrodes collect H2 and O2 separately, therefore, the volume of gas collected in one electrode is double the volume of gas collected in the other electrode. Q.

Why cathode rays are not produced at high pressure?

Why cathode rays are produced only when the pressure of the gas inside the discharge tube is very low ? Solution : At higher pressure (e.g., at 1 atomospheric pressure), no electric current flows through the tube because gases are poor conductor of electricity.

Why is the cathode positive in a fuel cell?

In a fuel cell, the cathode is electrically positive. The cathode is composed of platinum particles uniformly supported on carbon particles. The platinum acts as a catalyst, increasing the rate of the reduction process. The cathode is porous so that oxygen can pass through it.

Why is oxygen attracted to anode?

OH – ions are attracted to the anode , lose electrons and form oxygen gas.

How are the anode rays from different gases are different?

It is a stream of these positive ions that become ‘anode rays’. However, the atomic masses of different gases are different and hence, the mass of anode ray particles varies when you use different gases in the discharge tube and hence, the charge/mass ratio also varies.

What are the conditions to produce anode rays?

Two conditions for the production of anode rays:

• The electrical discharge takes place at very low pressures.
• The electrical discharge occurs at very high voltages.

Which gas produces anode rays?

Hydrogen gas produces anode rays consisting of protons in the discharge tube experiment.