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प्रश्न
Write one equation for the decomposition reaction where energy is supplied in the form of electricity.
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उत्तर
- \[\ce{\underset{(Molten)}{\underset{Aluminium oxide}{2Al2O3_{(l)}}} ->[Electricity][Decomposition] \underset{Aluminium metal}{4Al_{(l)}} + \underset{Oxygen}{3O2_{(g)}}}\]
- \[\ce{\underset{Water}{2H2O_{(l)}} ->[electricity][(Decomposition)] \underset{Hydrogen}{2H2_{(g)}} + \underset{Oxygen}{O2_{(g)}}}\]
- \[\ce{\underset{(Molten)}{\underset{Sodium chloride}{2NaCl_{(l)}}} ->[Electricity][(Decomposition)] \underset{Sodium metal}{2Na_{(s)}} + \underset{Chlorine gas}{Cl2_{(g)}}}\]
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संबंधित प्रश्न
Write the balanced chemical equation for the following and identify the type of reaction.
\[\ce{Zinc carbonate(s) -> Zinc oxide(s) + Carbon dioxide(g)}\]
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What type of chemical reaction takes place when limestone is heated?
What type of chemical reaction is represented by the following equation?
\[\ce{X -> Y + Z}\]
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MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Thermal decomposition of a substance is brought about with the help of
- reactants
- water
- wind
- heat
What are thermal decomposition reactions ? Explain with an example.
Give a scientific reason.
When the gas formed on heating limestone is passed through freshly prepared lime water, the lime water turns milky.
Identify the type of following reaction :
Give a balanced equation for –
A double decomposition neutralization reaction involving an acid and a base
Give a balanced equation for –
A white precipitate obtained during a double decomposition reaction involving a silver salt with sodium salt.
Electrolysis is type of ______ reaction.
Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during electrolysis of water is:
Give the ratio in which hydrogen and oxygen are present in water by volume.
Complete the following reaction:
\[\ce{C_12H_22O11->[Heat]}\] ______ + ______.
A metal nitrate 'A' on heating gives a metal oxide along with evolution of a brown coloured gas 'B' and a colourless gas, which helps in burning. Aqueous solution of 'A' when reacted with potassium iodide forms a yellow precipitate.
- Identify 'A' and 'B'
- Name the types of the reactions involved in the above statement.
