Q&A

When electricity passes through water hydrogen and oxygen are produced Which of the following is right?

When electricity passes through water hydrogen and oxygen are produced Which of the following is right?

Answer: When hydrogen burns in oxygen, water is formed; when electricity is passed through water, hydrogen and oxygen are given out, the chemical changes involved in the two is combination reaction.

What happens when electricity is passed through hydrogen?

When an electric discharge is passed through hydrogen gas, the hydrogen molecules dissociate to produce excited hydrogen atoms, These excited atoms emit electromagnetic radiation of discrete frequencies which can be given by the general formula.

When electricity passes through water hydrogen and oxygen are produced?

electrolysis of water
When electric current is passed through water, it splits up into hydrogen & oxygen. This is called electrolysis of water. Take out carbon rods carefully from two discarded cells.

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What type of reaction takes place when electricity is passed through water?

Electrolysis of water
Electrolysis of water is a decomposition reaction ; a single reactant breaks down into more than one product. The breaking down of H 2 O into H 2 and O 2 by passing electricity is known as electrolysis of water.

What happens when water is Electrolysed?

Electrolysis of water is the process by which water is decomposed into oxygen and hydrogen gas, when electric current is passed through it. These ions move to oppositely charged electrodes and liberated as gases at different electrodes.

When electricity passes through water What are the two gases?

When electricity is passed through water, then two gases, hydrogen and oxygen are produced. On the other hand, when heat is supplied to water, then another gas, steam is produced.

What happens when electric current passed through water Explain with diagram?

When electric current is passed through water , it decomposes to give hydrogen gas and oxygen gas. Water splits up into H+ ions and OH- ions . Positive H+ ions will move towards the negative terminal that is cathode and OH- ions will move towards anode.

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How does hydrogen and oxygen make electricity?

Hydrogen fuel cells produce electricity by combining hydrogen and oxygen atoms. The hydrogen reacts with oxygen across an electrochemical cell similar to that of a battery to produce electricity, water, and small amounts of heat. Many different types of fuel cells are available for a wide range of applications.

How hydrogen and oxygen are produced by electrolysis of water and the energy changes involved in the production of these gases?

Electrolysis of water is the process of using electricity to decompose water into oxygen and hydrogen gas by a process called electrolysis. Hydrogen gas released in this way can be used as hydrogen fuel, or remixed with the oxygen to create oxyhydrogen gas, which is used in welding and other applications.

What happens to water when an electric current passes through it?

When an electric current is passed through water, then water dissociates into hydrogen and oxygen. This is an example of the chemical effect of electric current. 11. What should be done to decompose water into hydrogen and oxygen?

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How much electricity does it take to produce 1 kg of hydrogen?

Considering the industrial production of hydrogen, and using current best processes for water electrolysis (PEM or alkaline electrolysis) which have an effective electrical efficiency of 70-80\%, producing 1 kg of hydrogen (which has a specific energy of 143 MJ/kg or about 40 kWh/kg) requires 50–55 kWh of electricity.

How do you separate hydrogen and oxygen from water?

By adding electricity to water and providing a path for the different particles to follow, the water can be separated into hydrogen and oxygen. In this experiment you will be taking a sample of salt water and add a flow of electricity to it (the electrolysis). You will see the hydrogen and oxygen bubbling up.

What is the volume of hydrogen liberated in electrolysis of water?

Assertion (A) : In electrolysis of water, the volume of hydrogen liberated is twice the volume of oxygen formed. Reason (R) : Water (H,0) has hydrogen and oxygen in the ratio of 1:2 by volume.