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प्रश्न
Differentiate between the following:
Decomposition reaction and a double decomposition reaction.
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उत्तर
Decomposition reaction and double decomposition reaction:
- Decomposition reaction: A compound decomposes into two or more new substances.
\[\ce{\underset{\text{orange}}{[NH4]2Cr2O7}->\underset{\text{green}}{Cr2O3} + 4H2O + N2}\] - Double decomposition: “Two substances exchange their ions and two new substances are produced one of which is insoluble i.e. ppt.”
\[\ce{AB + CD->AD + CB}\]
\[\ce{CaCl2 + Na2CO3->\underset{\text{ppt.}}{CaCO3} + 2NaCl}\]
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संबंधित प्रश्न
(a) Define the neutralization reaction with an example.
(b) Give a balanced equation for this reaction.
(c) Give three applications of neutralization reactions.
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NH4Cl → NH3 + HCl
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State which of the substance given below evolve oxygen gas on thermal decomposition.
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\[\ce{Cl2 + 2Kl->2KCl + l2}\]
Give a balanced equation for the following reaction of synthesis involving the formation of:
An acid – from sulphur dioxide gas
Define a thermal dissociation reaction with a suitable example.
Give an example of a photochemical decomposition reaction.
Explain the term double decomposition precipitation reaction.
Convert a soluble base to their respective soluble salts by neutralization reaction.
