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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
The reaction of iron nail with copper sulphate solution is ______ reaction.
State the type of reactions for the following represent and balance the ones that are not balanced.
2KClO3→ 2KCl + 3O2
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A coloured substance which decomposes violently leaving a coloured residue and evolving two neutral gases one of which is unreactive or inert in nature.
The reaction can be classified as:
State which of the following type, take place in the reaction is given below.
\[\ce{SO2 + 2H2O + Cl2->2HCl + H2SO4}\]
Define the following type of chemical change or reaction with a suitable example.
Displacement reaction or substitution reaction
Give a balanced equation for a direct combination reaction involving:
Two elements – one of which is a neutral gas and the other a monovalent metal
Give a reason why zinc displaces hydrogen from dilute sulphuric acid but copper does not.
Define the term – double decomposition – neutralization reaction.
Convert a soluble base to their respective soluble salts by neutralization reaction.
Complete the statement by filling in the blank with the correct word:
Direct combination reaction of sulphur dioxide with water gives ________.
