What happens when hydrogen and oxygen react?
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What happens when hydrogen and oxygen react?
When molecular hydrogen (H2) and oxygen (O2) are combined and allowed to react together, energy is released and the molecules of hydrogen and oxygen can combine to form either water or hydrogen peroxide. These two processes are represented by the two chemical equations shown at right.
How does hydrogen react with oxygen in water?
The actual reaction to make water is a bit more complicated: 2H2 + O2 = 2H2O + Energy. In English, the equation says: To produce two molecules of water (H2O), two molecules of diatomic hydrogen (H2) must be combined with one molecule of diatomic oxygen (O2). Energy will be released in the process.
How does hydrogen and oxygen become water?
What does the following equation explain 2H2O → 2h2+ O2?
2H2O=2H2+O. It means that a molecule of water is electrolysed and forms hydrogen and oxygen gas when elecricity is passed..
Is hydrogen and oxygen a combustion reaction?
1.1 Chemical Energy When the hydrogen molecule is burned (hydrogen combustion) with oxygen gas, the bonds between two hydrogen atoms are broken as well as those between oxygen atoms to make up bonds between hydrogen and oxygen atoms.
Is combining hydrogen and oxygen a chemical change?
Burning wood is a physical change. Combining hydrogen and oxygen to make water is a physical change.
Why is the reaction of hydrogen with oxygen exothermic?
Hydrogen reacts with oxygen to make water. The reaction between hydrogen and oxygen is exothermic. This means that energy is given out. The hydrogen-oxygen fuel cell uses the energy released from the reaction to produce electrical energy efficiently.
Is 2H2O –> 2H2 O2 endothermic?
This is an EXOTHERMIC reaction. The process is very efficient. Direct energy transfer – chemical into electrical.
Is mixing hydrogen and oxygen a physical change?
Combining hydrogen and oxygen to make water is a physical change. Breaking up concrete is a physical change. Sand being washed out to sea from the beach is a chemical change.
What is the energy change when hydrogen reacts with oxygen?
When hydrogen reacts with oxygen by burning, the chemical energy is given out as heat. A fuel cell converts chemical energy directly into electrical energy – there is no heat. The overall reaction is: 2H 2 + O 2 → 2H 2O with electrons being exchanged from the cathode to the anode.
What is the reducing agent in H2 O2 → 2H2O?
In the given reaction , 2H2 is oxidized to 2H2O by gaining oxygen atom. Thus , 2H2 is reducing agent as it undergoes oxidation.
What does the following equation explain 2H2O → 2H2+ O2?
Why is the reaction between hydrogen and oxygen exothermic?
A reaction which gives out energy is exothermic. When hydrogen reacts with oxygen by burning, the chemical energy is given out as heat. A fuel cell converts chemical energy directly into electrical energy – there is no heat.
Is combining hydrogen and oxygen a physical change?
F Combining hydrogen and oxygen to make water is a physical change.
What does the following equation explain 2h2o → 2h2+ o2?
